Hach TitraLab User Manual

DOC022.53.90467

TitraLab Total Hardness content analyzer

USER MANUAL

05/2013, Edition 1

© HACH Company 2013. All rights reserved. Printed in Germany

Table of Contents

Section 1 Specifications.................................................................................................................... 5

Section 2 General information......................................................................................................... 7

2.1 Safety information........................................................................................................................ 7

2.1.1 Warning labels .................................................................................................................... 7

2.1.2 Safety information for the correct use of the instrument ..................................................... 8

2.1.3 Chemical and biological safety ........................................................................................... 8

2.2 Overview of product..................................................................................................................... 8

2.3 Front and back view..................................................................................................................... 9

Section 3 Installation........................................................................................................................11

3.1 Unpack the instrument............................................................................................................... 11

3.2 Scope of delivery ....................................................................................................................... 11

3.3 Operating environment .............................................................................................................. 13

3.4 Installation.................................................................................................................................. 13

3.4.1 Installation of the burette................................................................................................... 13

3.4.2 Installation of the titration stand ........................................................................................ 15

3.4.2.1 Electrical connection of the magnetic stirrer ............................................................ 16

3.4.3 Installation of tubes ...........................................................................................................17

3.4.3.1 Removal of protective stickers (Uninstalled tubes configuration)............................. 17

3.4.3.2 Connection of feed tubes ......................................................................................... 18

3.4.4 Connection of the electrode.............................................................................................. 19

3.4.4.1 Electrical connection of the electrode ...................................................................... 19

3.4.4.2 Connection of the electrode tubes ........................................................................... 19

3.4.5 Power supply, external...................................................................................................... 19

3.5 Keypad....................................................................................................................................... 20

3.5.1 Optical mouse (Optional) .................................................................................................. 21

3.6 Reagents.................................................................................................................................... 21

Section 4 Operation.......................................................................................................................... 23

4.1 Switch on the instrument............................................................................................................ 23

4.2 Startup ....................................................................................................................................... 23

4.2.1 Language and data output setting .................................................................................... 23

4.2.1.1 Change the language setting ................................................................................... 23

4.2.1.2 Change the data output setting................................................................................ 24

4.2.2 First steps after installation ............................................................................................... 24

4.3 Menu structure........................................................................................................................... 24

4.4 Total Hardness analysis in water samples................................................................................. 25

4.5 Manual component activation .................................................................................................... 26

4.5.1 Burette .............................................................................................................................. 26

4.5.2 Pump................................................................................................................................. 26

4.5.3 Stirrer ................................................................................................................................ 26

4.6 System....................................................................................................................................... 26

4.6.1 Total Hardness units......................................................................................................... 26

4.6.2 Initial addition .................................................................................................................... 27

4.6.3 Data Logger ...................................................................................................................... 27

4.6.3.1 Sample numbers...................................................................................................... 27

4.6.4 Data Output (printer/computer) ......................................................................................... 27

4.6.5 Date/Hour.......................................................................................................................... 28

4.6.6 Display contrast ................................................................................................................28

4.6.7 Language .......................................................................................................................... 28

Section 5 Maintenance ....................................................................................................................29

5.1 Maintenance schedule............................................................................................................... 29

5.2 Power off the instrument............................................................................................................ 29

3

Table of Contents

5.3 Clean the burette........................................................................................................................29

5.4 Clean the ISE electrode .............................................................................................................30

5.5 Replace pump cassette..............................................................................................................30

Section 6 Troubleshooting..............................................................................................................33

6.1 Error messages .........................................................................................................................33

6.2 Incorrect results..........................................................................................................................33

Section 7 Replacement parts and accessories .........................................................................35

7.1 Replacement parts .....................................................................................................................35

7.2 Accessories ................................................................................................................................35

Section 8 Contact .............................................................................................................................37

Index ......................................................................................................................................................39

4

Section 1 Specifications

These are subject to change without notice!

Performance specifications

Measuring principle Complexometric titration. Potentiometric determination

Application area

Measuring range

Resolution Dependent on the selected units

Electrode Calcium ion selective electrode (combined electrode)

Languages English, Spanish, French and Italian

Data logger 55 data records

Date/time DD-MM-YYYY

Display 128 x 64 pt, backlit liquid crystal display

Keypad

Burette Resolution 0.001 mL

Material of syringe Polypropylene

Volume 10 mL

Tube s White PTFE tubes

Volumetric flow 100 mL/min

Peristaltic pump

Tube Novoprene (internal diameter 2.4 mm)

Measuring electrode

Magnetic stirrer

Computer or printer RJ11 telephone connector

Inputs and outputs

Power supply, external

Determination of Total Hardness (Calcium and Magnesium)
content in water

Min. 0.3 mL or 6 ppm CaCO
Recommended max. 10 mL or 200 ppm CaCO
Maximum titration system capacity of 20 mL or 400 ppm CaCO

7 membrane keys, splash-proof, PET, 
lifetime of >6 million key-presses

BNC connector; maximum voltage ±2.2 V, maximum current

1

1 mA.
RCA connector (cinch), maximum voltage 12 V, maximum current

150 mA

Instrument input: 24 V 45-65 Hz, 1 A
External power supply delivered:
Input: 100-240 VAC, ±10 %, 50-60 Hz
Output: 24 VDC, 1.33 A

2

3

3

3

Mouse Mini-DIN connector

Dimensions of measuring instrument and environmental conditions

Enclosure material ABS and enameled steel

Weight Approximately 4 kg

Dimensions 130 x 160 x 300 mm

Working temperature +15 to +40 °C (+60 to +104 °F)

Storage temperature -10 to +50 °C (+14 to +122 °F)

Air humidity <80% relative humidity, non-condensing

Certification

5

Specifications

Certification CE

Electrical security According CE, EN 61010

Electromagnetic compatibility According CE, EN 50081-2 and EN 50082-2

Warranty

Warranty 1 year

1

Only for supplied electrode.

2

Only for supplied stirrers.

6

Section 2 General information

NOTICE

The manufacturer is not responsible for any damages due to misapplication or misuse of this
product including, without limitation, direct, incidental and consequential damages, and disclaims
such damages to the full extent permitted under applicable law. The user is solely responsible to
identify critical application risks and install appropriate mechanisms to protect processes during a
possible equipment malfunction.

2.1 Safety information

Please read the entire user manual carefully before the equipment is unpacked, set up or
put into operation. Pay attention to all danger and warning statements. Failure to do so
could result in serious injury to the operator or damage to the equipment.

To make sure that the protection provided by this instrument is not impaired, do not use or
install this instrument in any manner other than that specified in these operating
instructions.

DANGER

Indicates a potentially or imminently hazardous situation that, if not avoided, results in death or
serious injury.

Indicates a potentially or imminently hazardous situation that, if not avoided, could result in death
or serious injury.

Indicates a potentially hazardous situation that may result in minor or moderate injury.

Indicates a situation that, if not avoided, could result in damage to the instrument. Information that
requires special emphasis.

Note: Information that supplements points in the main text.

2.1.1 Warning labels

Read all labels and tags attached to the instrument. Failure to do so may result in personal
injury or damage to the instrument. For symbols applied to the instrument, corresponding
warnings are provided in the user manual.

This symbol, if noted on the instrument, references the instruction manual for operation and/or safety
information.

WARNING

CAUTION

NOTICE

This symbol may be found on an enclosure or barrier within the product and indicates a risk of electrical shock
and/or death by electrocution.

7

General information

Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal
systems after 12 August 2005. In conformity with European local and national regulations, European electrical
equipment users must now return old or end-of life equipment to the manufacturer for disposal at no charge to
the user.

Note: For return for recycling, please contact the equipment manufacturer or supplier for instructions on how to
return end-of-life equipment, manufacturer-supplied electrical accessories, and all auxiliary items for proper
disposal.

2.1.2 Safety information for the correct use of the instrument

• This instrument is intended only for indoor use.

• Do not vibrate or jolt the instrument.

• Do not open the instrument. Only authorized and trained personal is allowed to open

the instrument. Follow the following safety information, in addition to any local
guidelines in force.

Guarantee is voided if the instrument is not used in accordance with the guidelines
present in this document.

2.1.3 Chemical and biological safety

Potential danger in the event of contact with chemical/biological materials.
Handling chemical samples, standards and reagents can be dangerous.
Familiarize yourself with the necessary safety procedures and the correct handling of the

chemicals before the work and read and follow all relevant safety data sheets.

This instrument has been developed to meet the requirements of volumetric titration applications.
It is therefore aimed at experienced users who have the knowledge required to operate the
instrument and implement the security instructions enclosed. Remember that this instrument
must not, under any circumstances, be used to perform test on living beings.

Normal operation of this instrument may involve the use of hazardous chemicals or
biologically harmful samples.

• Observe all cautionary information printed on the original solution containers and
safety data sheet prior to their use.

• Dispose of all consumed solutions in accordance with national regulations and laws.

• Select the type of protective equipment suitable to the concentration and quantity of

the dangerous material at the respective work place.

2.2 Overview of product

WARNING

WARNING

Many industrial and domestic water users are concerned about the hardness of their
water. Hardness is caused by compounds of calcium and magnesium and by a variety of
other metals. High levels of hard-water ions such as Ca
deposits in plumbing, appliances, and boilers. Water is an excellent solvent and readily
dissolves minerals it comes in contact with. As water moves through soil and rock, it
dissolves very small amounts of minerals and holds them in solution. Calcium and
magnesium dissolved in water are the two most common minerals that make water "hard".

Originally, the hardness of water was understood to be a measure of the capacity of water
for precipitating soap. Soap is precipitated chiefly by the calcium and magnesium ions
commonly present in water, but may also be precipitated by ions of other polyvalent

8

2+

and Mg2+ can cause scaly

metals, such as aluminium, iron, manganese, strontium and zinc, and by hydrogen ions.
Because, all but the first two are usually present in insignificant concentrations in natural
waters, hardness is defined as a characteristic of water, which represents the total
concentration of just the calcium and the magnesium ions expressed as calcium
carbonate.

The TitraLab Total Hardness system can be used for the determination of sum of calcium
and magnesium in multiple types of waters: industrial, boilers, ground, surface, drinking
waters, etc. The system is not intended for effluents and waters having a high
concentration of salts. The lowest concentration that can be determined is 6 ppm
CaCO3 mg/L, for lower concentrations refer to Factor entry at 4.3 Menu structure,

page 24.

TitraLab features an RS 232 C interface to enable communication with a computer or
printer. Another port enables a mouse (optional) to be connected to perform all the
functions of "OK". A convenient titration stand is also integrated and equipped with
stirrers; and pump integrated with the titrator add the reagent.

2.3 Front and back view

Figure 1 Front view

General information

1 TitraLab Total Hardness system 6 Titration stand with magnetic stirrer
2 Keypad 7 Titration cell
3 Display 8 Syringe cover
4 Auxiliary reagent 9 Burette
5 Titrant

9

General information

Figure 2 Back view

1 Connector for mouse 5 Connector for magnetic stirrer
2 Connector for printer or computer 6 Burette valve, IN socket
3 Electrode connector 7 Burette valve, OUT socket
4 Connector for power supply

10

Section 3 Installation

Only qualified personnel should conduct the tasks described in this section of the manual.
Safety of any system incorporating this instrument is responsibility of the assembler of the

system.

Risk of injury to eyes, skin and respiratory
When working with chemicals and/or solvents, always observe the relevant accident prevention

regulations and wear appropriate personal protective clothing for eye, face, hand, body and/or
respiratory protection.

Make sure that the system is only unpacked, assembled, connected and operated by qualified
and trained personnel.

3.1 Unpack the instrument

Unpack all supplied parts carefully, as they are highly sensitive in part to shock and
impact. Read the user manual prior to installation and proceed exactly as described.

DANGER

WARNING

3.2 Scope of delivery

Please check that the order is complete. If anything is missing or damaged, please contact
the manufacturer or retailer.

11

Installation

Figure 3 Scope of delivery

1 TitraLab Total Hardness system 8 Combined Calcium (Ca2+) Ion Selective electrode

with cable

2 2x tube with bottle closure (DIN 45 thread) supplied

pre-installed

3 2x tube to attach to electrode, supplied pre-installed 10 Power supply, external
4 Titration stand holder including magnetic stirrer 11 Hardware sleeve
5 10x Titration Beakers, PP, 100 mL 12 Syringe with plunger
6 10x Teflon magnetic stirring bars (20 mm x 6 mm) 13 2x Desiccant cartridge
7 10x white O-rings for burette and pump threads

9 Adapter for power supply

12

3.3 Operating environment

The instrument may not be used in dangerous environments.
The manufacturer and its suppliers reject any express or indirect guarantee for use with high-risk

activities.

Protect the instrument from temperature extremes, including heaters, direct sunlight and other
heat sources.

Note the following points so that the instrument will operate perfectly and have a long
service life.

• Place the instrument firmly on an even surface. Do not push any objects under the
instrument.

• The ambient temperature must be +15 to +40°C (+60 to +104°F).

• The relative humidity should be less than 80%; moisture should not condense on the

instrument.

Installation

WARNING

NOTICE

• A minimum clearance of 15 cm (5.9 in.) must be ensured above and on all sides of the
device; this allows the air to circulate and prevents overheating of the electric parts.
The dosage arm of the stepper motor must be able to move freely.

• Do not operate or store the instrument in extremely dusty, humid or wet locations.

• Make sure that no liquids enter the instrument and immediately wipe away any liquids

that contact the instrument.

• Protect the instrument against vibrations, direct sunlight, corrosive gases as well as
strong magnetic and/or electric fields.

• Only use genuine replacement parts and accessories.

• Install the instrument in a levelled place and on a compact surface to minimize the

sound level of the instrument. This will avoid undesired resonances that can increase
the sound level.

• Keep the surface of the instrument and all accessories clean and dry at all times.
Splashes or spills on the instrument should be cleaned up immediately.

The instrument must be serviced by the manufacturer's service department at the
prescribed intervals.

3.4 Installation

3.4.1 Installation of the burette

The burette dispenses the titrant: EDTA 0.010 M TitraVer (P/N 205-53) solution.

The burette comprises the syringe, stepper motor and valve. The stepper motor and valve
are already installed in the TitraLab; the syringe has to be installed by the user.

WARNING

Risk of injury to pinch points and cuts
Make sure that the titrator is never used/operated without the syringe cover.
Do not introduce your fingers on the bottom of the cover while the instrument is connected.
Make sure that the system is only assembled by qualified and trained personnel.

13

Installation

NOTICE

Warning against system damage
Make sure that the syringe is never operated without the attachment sleeve.
Only use genuine replacement parts and accessories.
The instrument must be serviced by the manufacturer's service department at the prescribed

intervals.

Note: Make sure that you do not misplace the attachment sleeve for the syringe. It is not provided
with a new syringe.

1. Push the syringe piston into the syringe body.
Slide the attachment sleeve fully onto the syringe so that the narrow end points
toward the piston.

2. Remove the syringe cover by unscrewing it.

3. Point the syringe tip upward, place the syringe into the bracket such that the

attachment sleeve is above the bracket.

4. Hold the attachment sleeve in the bracket and screw the syringe onto the valve from
below.



With the narrow side facing down, carefully press the attachment sleeve into the
bracket.

5. Withdraw the piston from the syringe and place it onto the screw in the dosage arm.
Hold the syringe piston and turn the attachment screw on the dosage arm into the
thread in the piston.

6. Fix the syringe cover with six screws.

WARNING

Risk of injury to eyes, skin and respiratory
During the first days of system use, check the screw joint between the syringe and valve to avoid

leaks and the potential escape of reagents.
When working with chemicals and/or solvents, always observe the relevant accident prevention

regulations and wear appropriate personal protective clothing for eye, face, hand, body and/or
respiratory protection.

14

Figure 4 Installation of the burette

Installation

1 Push the piston into the syringe body.

Slide the attachment sleeve onto the syringe.

2 Unscrew the six screws and remove the syringe cover. 5 Screw the piston onto the dosage arm.
3 Insert the syringe into the bracket. 6 Fix the syringe cover with six screws.

4 Screw the syringe tip onto the valve.

Place the attachment sleeve into the bracket.

3.4.2 Installation of the titration stand

The titration stand consists of a holder onto which the electrode, titration cell and magnetic
stirrer are attached. The titration is performed in the titration cell.

1. Place the titration stand on the right side (syringe side) of the titrator (observe the
routing of the cable).

2. Place a magnetic stirring bar into a titration cell.
Place a titration cell over the magnetic stirrer.

3. Place the rubber ring on the stand rod to set the minimum height of the electrode
holder.

4. Press the button to lock the electrode holder and place the electrode holder on the
stand rod. The electrode holder is locked upon release of the button.

5. Remove the cap from the tip of the electrode.
Insert the electrode into the electrode holder.

NOTICE

Warning against system damage
Make sure that the height setting of the electrode holder protects the electrode against damage

from the stirring bar and against contact with the bottom of the titration cell.
Keep the lock button pressed whenever the electrode holder is being moved.

Note: Whenever the electrode is taken from the titration stand or the titration cell is removed from
the titration stand, always place a container beneath the electrode. Otherwise, drips from the sample
or chemicals could contaminate the work area.

15

Installation

Figure 5 Installation of the titration stand

1 Place a magnetic stirring rod in a titration cell. Place a

titration cell over the magnetic stirrer.

2 Position a rubber ring on the stand rod to set the

minimum height of the electrode holder. Press the
electrode holder lock button and place the electrode
holder on the stand rod.

3 Insert the electrode and adjust the height of the

3.4.2.1 Electrical connection of the magnetic stirrer

1. Connect the cable of the magnetic stirrer to the STIRRER port on the back of the

TitraLab.
The power is supplied via the TitraLab.



electrode holder.

16

Figure 6 Electrical connection of the magnetic stirrer

1 Connect the cable of the magnetic stirrer to the STIRRER port.

Installation

3.4.3 Installation of tubes

WARNING

Risk of injury to eyes, skin and respiratory
During the first days of system use, check the screw joint between the syringe and valve to avoid

leaks and the potential escape of reagents.
When working with chemicals and/or solvents, always observe the relevant accident prevention

regulations and wear appropriate personal protective clothing for eye, face, hand, body and/or
respiratory protection.

Make sure that the tubes are never kinked.

Regularly check the system as well as all tubes and connections for leaks, condition and
cleanliness.

To prevent twisting of the tubes, you should always connect flange tube connections
before those with grommets.

The system is delivered with four tubes; these are supplied pre-installed on the TitraLab
and only need to be connected to the relevant reagent bottles and to the electrode.

3.4.3.1 Removal of protective stickers (Uninstalled tubes configuration)

1. Remove the protective stickers on the burette valve and pump connections.

2. Make sure that the pre-installed white O-rings are not removed.

3. Check that the O-rings are in a horizontal position inside the thread.

17

Installation

Figure 7 Position of protective stickers

3.4.3.2 Connection of feed tubes

The system is delivered with two feed tubes with bottle closures (DIN 45 thread). These
feed tubes are supplied pre-installed on the TitraLab and only need to be connected to the
relevant reagent bottles.

1. Connect the tube from the IN socket of the burette valve to the titrant bottle (EDTA

0.010

M TitraVer, P/N 205-53). Screw on the bottle closure to do this.

2. Connect the tube from the IN socket of the pump to the acid bottle (Hardness Buffer
reagent, TRIS 0.1

3. Place a desiccant cartridge into the designated opening in each bottle closure.

Figure 8 Connection of feed tubes

M). Screw on the bottle closure to do this.

18

3.4.4 Connection of the electrode

3.4.4.1 Electrical connection of the electrode

1. Connect the electrode cable to the ELECTRODE port on the back of the TitraLab.

The power is supplied via the TitraLab.

3.4.4.2 Connection of the electrode tubes

The sensor holder of the titration stand has two tube guides.

1. Connect the tube from the OUT socket of the pump to the electrode.

2. To do this, push the free end of the tube into guide "1" of the sensor holder until it

reaches the middle of the electrode (1).

3. Connect the tube on the OUT socket of the burette valve to the electrode.

4. To do this, push the free end of the tube into guide "2" of the sensor holder until the

end of the tube is flush with the tip of the electrode (2).

Figure 9 Connection of the electrode

Installation

3.4.5 Power supply, external

Risk of electric shock
Make sure the AC supply voltage is suitable for the power supply and the mains plug style is

suitable for the type of outlet socket.
Only use the original power supply and plug connectors.

Fire and electrical shock hazard.
Take care, when using chemical products and liquids, to avoid dropping them on the power

supply or mains connections.

DANGER

DANGER

19

Installation

The power supply is provided with different plug connectors. The correct plug connector
must be attached to the power supply before first use.

Figure 10 Plug connector attachment

1 Slide the plug connector into the power supply 2 Click the plug connector into place

Note: To change the plug connector, press in the catch and slide the plug connector upward.

3.5 Keypad

Navigation key UP

• Used to select between different options on the display.

• Increases numeric values.

• Shows the previous data record in the data log menu.

• Empties the syringe through the discharge tube during manual control.

Navigation key DOWN

• Used to select between different options on the display.

• Reduces numeric values.

• Shows the next data record in the data log menu.

• Fills the syringe through the feed tube during manual control.

ON/OFF key

20

Navigation key LEFT

• Moves the cursor backward for entry of numeric values.

• Scrolls up in menus.

• Empties the syringe through the feed tube during manual control.

Navigation key RIGHT

• Moves the cursor forward for entry of numeric values.

Figure 11 Keypad

Installation

• Scrolls down in menus.

RETURN key

• Scrolls back in menus.

• Cancels a manual control.

• Cancels a titration.

OK key (Check mark)

• Confirms the gray-highlighted menu items and scrolls forward in the menu.

• Shows the first data record in the data log.

1 Navigation key UP 5 Navigation key DOWN
2 ON/OFF key 6 Navigation key LEFT
3 Navigation key RIGHT 7 RETURN key
4 OK key (Check mark)

3.5.1 Optical mouse (Optional)

On TitraLab Total Hardness all functions executed with OK can also be performed with an
optical mouse.

1. Connect the mouse cable to the port labeled MOUSE on the back of the TitraLab.
The power is supplied via the TitraLab.

3.6 Reagents

• Titrant reagent: EDTA 0.010 M TitraVer, P/N 205-53

• Buffer reagent: Hardness buffer reagent (TRIS 0.1 M).

21

Installation

22

Section 4 Operation

4.1 Switch on the instrument

Become familiar with the instrument functions before operation. Learn how to navigate
through the menu and perform the relevant functions.

1. Connect the input connector of the power supply to the POWER IN port on the back of
the TitraLab.

2. Connect the power supply to a power socket.

3. Press ON/OFF below the display to switch on the instrument.

4. The instrument performs a self-test upon each activation.

Note: Wait approximately 20 seconds before switching on again so as not to damage the electronics
and mechanics of the instrument

Figure 12 Switch on the instrument

4.2 Startup

4.2.1 Language and data output setting

The titrator software supports multiple languages. The first time the instrument is switched
on, a language selection list is displayed automatically upon completion of the self-test.

1. Select the required language.

2. Press OK to confirm the selection.

3. Select the type of data output (deactivated, printer, computer) and confirm with OK.

4.2.1.1 Change the language setting

The instrument functions in the selected language until the option is changed.

1. Turn the instrument on.

2. Select SYSTEM > LANGUAGE.

3. Select the required language.

23

Operation

4. Press OK to confirm the selection.

4.2.1.2 Change the data output setting

The instrument functions in the selected data output until the option is changed.

1. Turn the instrument on.

2. Select SYSTEM > DATA OUTPUT.

3. Select the required setting.

4. Press OK to confirm the setting.

4.2.2 First steps after installation

Risk of injury to eyes, skin and respiratory
Make sure that the reagent tubes are in the correct position in the titration cell to avoid leaks and

the potential escape of reagents.

1. Prime the burette with titrant (4.5.1 Burette).

2. Prime the pump to add the Hardness Buffer (4.5.2 Pump).

WARNING

3. Check the stirring speed (4.5.3 Stirrer).

4.3 Menu structure

Section 6 Troubleshooting provides a list of all error and warning messages, and also

describes all necessary countermeasures.

MAIN MENU

ANALYZE TOTAL HARDNESS Titration program to determine water Total Hardness

Insert sample: 1 Dispense 50.0 mL of sample in the titration cell.

Start Analysis Start analysis.

MANUAL ACTIVATION Select which element is to be controlled manually; refer to section 4.5, page 26.

Burette Manual control of burette.

Return Empties the burette into the titrant bottle (navigation key LEFT)
Empty Empties the burette into the titration cell (navigation key UP)
Fill Fills the burette with titrant (navigation key DOWN)

Pumps Manual control of pump.

Pump1 Dispensing Start the pump.

Sets the stirring speed.

Stirrer

Select ON/OFF with OK. 
Select the stirring speed with UP/DOWN.

24

MAIN MENU

SYSTEM System settings; refer to section 4.6, page 26.

Total Hardness units The unit and factor to determine water Total Hardness are adjusted individually.

Units Unit selection.

meq/L CaCO
mmol/L CaCO
ppm CaCO
mg/L CaCO
dGH
°dH
gpg
°e
°Clark
°F

Factor

Data Logger Data log with up to 55 results; refer to section 4.6.3, page 27.

Empty Data-Logger Empties the data log.
Display data Display results with search criteria.

By date: Display results by date.
Continue… Display all results.

Data Output Define the data output; refer to section 4.6.4, page 27.

Deactivated Deactivates the data output.
For Printer Activates data output on the printer.

For Computer Activates data output on the computer.
Date / Hour Entry of date and time.
Display contrast Selection of display contrast.
Language Selection of operating language

SPANISH

ENGLISH

ITALIAN

FRENCH

3

3

3

3

(default)

The factor must be adjusted individually.
Default value F=20.02; Calculated for EDTA 0.010 M; Sample Volume: 50 mL;
Results expressed in mg/L CaCO

For Total Hardness value lower than 6 mg/L CaCO3, it is recommended to analyze
100 mL of sample instead of 50 mL. In this case it is necessary to modify the factor
for calculation to F=10.01

Total Hardness value higher than 380 mg/L CaCO3. It is recommended to analyze

mL of sample instead of 50 mL. In this case add approx. 40 mL of distilled water

10
to the vessel before the analysis and modify the factor calculation to F=100.09

3

Operation

4.4 Total Hardness analysis in water samples

1. Place a magnetic stirring bar in a titration cell and dispense the sample as follows:

• Water: 50.0 mL sample

2. Place the titration cell over the magnetic stirrer.

25

Operation

3. Lower the electrode into the titration cell.

Note: Make sure that the electrode cannot be damaged by the stirring bar or come into contact
with the bottom of the titration cell. Make sure that the sensitive part of the ISE electrode is
covered by sample

4. Select ANALYZE TOTAL HARDNESS. "INSERT SAMPLE: 1" is shown on the display.

5. Select OK.

The following steps are carried out automatically by TitraLab:

• Hardness Buffer is dispensed into the titration cell for 7 seconds

• The solution is stirred for 5 seconds

• Titration is then started

6. The result is shown on the display and, depending on the setting, sent to a printer or

computer.

7. Press OK to confirm the result.

To begin another analysis, select OK. "NEXT SAMPLE" is shown on the display.

4.5 Manual component activation

4.5.1 Burette

4.5.2 Pump

4.5.3 Stirrer

1. Select MANUAL ACTIVATION > BURETTE and press OK to confirm.

• Select FILL with the DOWN navigation key to fill the burette.

• Select EMPTY with the UP navigation key to empty the burette into the titration cell.

• Select RETURN with the LEFT navigation key to empty the burette back into the

titrant bottle.

Note: Repeat this procedure multiple times to make sure that the dispensing process functions
correctly.

1. Select MANUAL ACTIVATION > PUMPS and press OK to confirm.

2. Press OK to switch the pump on or off.

Note: Repeat this procedure multiple times to make sure that the dispensing process functions
correctly.

1. Select MANUAL ACTIVATION > STIRRER and press OK to confirm.

2. Press OK to switch the stirrer on or off.

3. Use the navigation keys UP and DOWN to select the stirring speed.

4.6 System

This function can be used to adapt the titrator to specific requirements.

4.6.1 Total Hardness units

The unit and factor for calculation must be adjusted individually.By default the instrument
will calculate the total hardness content in mg/L CaCO3, F=20.02. Valid only if:

• TItrant reagent EDTA 0.010 M TitraVer, P/N 205-53

26

mmol/L 1 0.000249 0.4471 0.4281 0.357 0.2497

ppm, mg/L 20.02 1 17.85 17.12 14.25 10

°dH, dGH 2.237 0.05603 1 0.9591 0.7986 0.5603

gpg 2.336 0.05842 1.043 1 0.8327 0.5842

°Clark, °e 2.800 0.07016 1.252 1.201 1 0.7016

°F 4.004 0.1 1.785 1.712 1.425 1

4.6.2 Initial addition

By default 0 mL.

Volume of the addition added at the beginning of the titration. Only recommended when
the expected titrant reagent consumption is higher than 6 mL.

Initial addition recommended = Expected titrant volume - 1 mL.

Operation

• Sample volume: 50 mL

Table 1 Conversion table

mmol/L ppm, mg/L °dH, dGH gpg* °Clark, °e °F

4.6.3 Data Logger

This section describes the functions of the data log.

• Up to 55 results are stored.

• The results can be displayed, printed or sent to a computer.

• When the data log is full, the oldest result is overwritten automatically.

1. Select SYSTEM > DATA LOGGER > DISPLAY DATA and press OK to confirm. A range

of search filters can be used to display the results.

BY DATE: displays the results for a specific date.

CONTINUE: displays all results.

2. To empty the data log, select SYSTEM > DATA LOGGER > EMPTY DATA-LOGGER and

press

OK to confirm.

4.6.3.1 Sample numbers

When a titration program is started, the first sample is assigned the number 1. All
subsequent samples receive sequential numbers until the titration program is closed.
When the program is launched again, the sequential numbers reset to 1.

4.6.4 Data Output (printer/computer)

This function is only displayed if a printer or computer is connected and activated for data
output. Programs, settings and results can be printed or transferred. Following a titration
or calibration, the following data is printed or transferred:

• Type of analysis, date and time, titration result, titrant end volume, duration of titration
and sample number.

1. Select SYSTEM > DATA OUTPUT.

2. Select FOR PRINTER followed by the relevant printer model, such as thermal or dot

matrix. Confirm with

OK.

Select FOR COMPUTER followed by either CAPTURE or TICOM. Confirm with OK.

27

Operation

4.6.5 Date/Hour

Entry of date and time.

4.6.6 Display contrast

Increases or decreases the display contrast.

4.6.7 Language

English, Spanish, Italian, French.

28

Section 5 Maintenance

WARNING

Risk of injury
Before maintenance or repair work is conducted, thoroughly rinse the instrument with deionized

water and make sure that there are no residual chemicals in the tubes and pumps.
Only use genuine replacement parts and accessories.
The instrument must be serviced by the manufacturer's service department at the prescribed

intervals.

After maintenance tasks or service, the following points have to be checked:

• The housing of the instrument has to be closed correctly using the corresponding
screws.

• Check the syringe cover for fissure or damage, replace if necessary. The syringe
cover has to be attached firmly to the instrument using the corresponding screws.

• Place the instrument firmly on an even surface.

5.1 Maintenance schedule

Maintenance task Every week 6 months 12 months

Replace dry desiccant cartridges content. x
Check all tube connections for leaks and damage. x
Replace burette syringe x
Check valve block x
Burette feed tube x
Burette discharge tube x
Peristaltic pump, pump cassette x
Pump feed tube x
Pump discharge tube x
Bottle closure set x
Check syringe and syringe connection for leaks and

damage

x

5.2 Power off the instrument

At the end of the working day, deactivate the instrument as follows:

• Empty the contents of the burette into the titrant bottle; refer to section 4.5.1, page 26.

• Empty and clean the used titration cells with deionized water

When the instrument is to be deactivated for multiple days or extended periods, perform
the following steps:

• Clean the burette and pumps with deionized water

• Seal the reagent bottles with the original bottle closures

• Empty and clean the used titration cells with deionized water

5.3 Clean the burette

Make sure that there are no crystals or other sediments inside the syringe. If such deposits
are discovered, clean the syringe immediately, as this will otherwise damage the plunger.

29

Maintenance

5.4 Clean the ISE electrode

Possible deposits formed on the membrane are removed by immersing the electrode in
distilled water for a few minutes. After that, condition the electrode by immersing it for
30 minutes in a solution of 10 mg/L Calcium. Store the electrode clean and dry with the
protective cap on.

5.5 Replace pump cassette

1. Remove the screws on the right and left of the housing cover (refer to point 1 in

Figure 13).

2. Remove the housing cover.

3. Press the ends of the gripper clamps together (with pliers, for example) and slide the

clamps down and off the connectors.
Remove the tubes from the connectors.

4. Press in the catches on the right and left of the pump cassette.
Remove the pump cassette from the shaft.

5. Slide the gripper clamps onto the tubes of a new pump cassette.

6. Slide the new pump cassette onto the shaft until the catches engage.

7. Slide the tubes onto the connectors.



8. Press the ends of the gripper clamps together (with pliers, for example) and slide the
clamps up onto the connectors.

9. Put the housing cover back on and tighten the screws.

30

Figure 13 Replace pump cassette

Maintenance

1 Remove the screws on the right and left of the housing

cover.

2 Remove the housing cover. 4 Press in the catches on the right and left of the pump

3 Press the ends of the gripper clamps together (with

pliers, for example) and slide the clamps down and off
the connectors.
Remove the tubes from the connectors.

cassette.
Remove the pump cassette from the shaft.





31

Maintenance

32

Section 6 Troubleshooting

6.1 Error messages

Error displayed Cause Resolution

The maximum volume is reached

Maximum volume reached.

Equivalence points not found.

Data logger empty.

All data will be erased. All data in the data log will be erased.
Printing error. Printer is connected but not activated. Switch on the printer.

PC not connected.

Unstable mV reading

before the titration is completed. The
titration is cancelled automatically.

No equivalence points found during
titration.

Total Hardness value below measuring
range.

No results are stored or no results
match the search filter.

Computer is activated but not
connected.

Defective electrode and/or insufficient
immersion.

Empty the titration cell and restart the
titration.

• Check the system with a
calcium standard of known
concentration (for example
40

ppm of total Hardness)

• Verify that, after TRIS addition,
the pH of the sample is between

9.5-10.

• Check the electrode according
to manufacturer
recommendations, maintain
electrode as required. Check if
porous diaphragm is covered by
the sample.

Change the search filter criteria.

Check the computer connection.

Check electrode according to
manufacturer recommendations,
maintain electrode as required. Check
sensitive part of electrode is covered by
sample.

6.2 Incorrect results

Incorrect results Cause Resolution

In case of problems or wrong results it
is always recommended verify that the

titration has finished correctly adding,
The result differs from the expected
value

The selected units and the factor
introduced for them is not correct.

after the analysis, some drops of

Hardness 2 Solution (P/N 425-32). Blue

color indicates that the titration has

finished properly. If not, verify all the

points mentioned in this section.

33

Troubleshooting

34

Section 7 Replacement parts and accessories

NOTICE

Warning against system damage
Only use genuine replacement parts and accessories.
The instrument must be serviced by the manufacturer's service department at the prescribed intervals. Do not attempt to

service this product yourself, except as noted in the user manual.

7.1 Replacement parts

Description Cat. No

TitraLab Total Hardness system for waters, with 1 x 10 mL syringe and pump. Accessories
included: electrode holder with magnetic stirrer, combined calcium ISE electrode, 10 titration
cells and stirring bars

Calcium (Ca2+) combined ISE electrode with 1m fixed cable and BNC plug LZW9660C.97.002 C
Titration stand with sensors support and magnetic stirrer for TitraLab Total Hardness LZW2332.99
Magnetic stirrer for stand Total Hardness LZW2330.99
10x Teflon magnetic stirring bars, (20 x 6 mm) LZW9339.99
Titration Vessel, PP, 40-100 mL (pack of 50 pcs) 904-490
Plastic syringe, 10 mL LZW2323.99
Attachment sleeve for syringe LZW8743.99
Inlet tube for burette/pump, L = 65 cm, d = 2.5 x 1.5 mm, with R6 racord LZW8705.99
Outlet tubes set for burette.L = 55 cm, d = 2 x 1 mm, with R6 racord LZW8709.99
Pump cassette with neoprene tube, internal diameter 2.4 mm, flow rate 100 mL/min. LZW8691.99
Screw cap DIN 45 LZW8729.99
10x replacement O-rings for tube connections LZW8734.99
Cotton filter cartridge for reagent bottle cap LZW9199.99
Electro-valve for Burette LZW9249.99

LLV2310.97.1102

7.2 Accessories

Description Cat. No

3-button mouse LZW9240.99
Standard PC keyboard, mini-DIN connector. LZW9013.99
RS 232 C cable for connection between titrator and PC, with 9-pin and USB connectors LZW9135USB.99
KyoMouse RS for use with TitraLab (with specific firmware) with connection cable. LZW8204.99
5 rolls thermal paper for KyoMouse, 5 year warranty LZW8205.99
5 rolls thermal paper for KyoMouse, 10 year warranty LZW8206.99
Hardness 2 Test soluiton, 100 mL MDB 42532
EDTA standard solution, 0.010 N 1000 mL 20553

35

Replacement parts and accessories

36

Section 8 Contact

HACH Company
World Headquarters

P.O. Box 389
Loveland, Colorado
80539-0389 U.S.A.
Tel (800) 227-HACH
(800) -227-4224
(U.S.A. only)
Fax [phone]
[e-mail]
www.hach.com

HACH LANGE GMBH

Willstätterstraße 11
D-40549 Düsseldorf
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.de

HACH LANGE GMBH

Rorschacherstrasse 30a
CH-9424 Rheineck
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ch

Repair Service in the
United States:

HACH Company
Ames Service
100 Dayton Avenue
Ames, Iowa 50010
Tel [phone]
(U.S.A. only)
Fax [phone]

HACH LANGE LTD

Pacific Way
Salford
GB-Manchester, M50 1DL
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.co.uk

HACH LANGE FRANCE
S.A.S.

8, mail Barthélémy Thimonnier
Lognes
F-77437 Marne-La-Vallée
cedex 2
Tél. [phone]
Fax [phone]
[e-mail]
www.hach-lange.fr



Repair Service in Canada:

Hach Sales & Service
Canada Ltd.
1313 Border Street, Unit 34
Winnipeg, Manitoba
R3H 0X4
Tel [phone]
(Canada only)
Tel [phone]
Fax [phone]
[e-mail]

HACH LANGE LTD

Unit 1, Chestnut Road
Western Industrial Estate
IRL-Dublin 12
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ie

HACH LANGE NV/SA

Motstraat 54
B-2800 Mechelen
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.be

Repair Service in
Latin America, the
Caribbean, the Far East,
Indian Subcontinent, Africa,
Europe, or the Middle East:

Hach Company World
Headquarters,
P.O. Box 389
Loveland, Colorado,
80539-0389 U.S.A.
Tel [phone]
Fax [phone]
[e-mail]

HACH LANGE GMBH

Hütteldorfer Str. 299/Top 6
A-1140 Wien
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.at

DR. LANGE NEDERLAND
B.V.

Laan van Westroijen 2a
NL-4003 AZ Tiel
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.nl

HACH LANGE APS

Åkandevej 21
DK-2700 Brønshøj
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.dk

HACH LANGE LDA

Av. do Forte nº8
Fracção M
P-2790-072 Carnaxide
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.pt

HACH LANGE KFT.

Vöröskereszt utca. 8-10.
H-1222 Budapest XXII. ker.

Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.hu

HACH LANGE AB

Vinthundsvägen 159A
SE-128 62 Sköndal
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.se

HACH LANGE SP. ZO.O.

ul. Krakowska 119
PL-50-428 Wrocław
Tel. [phone]
Zamówienia: [phone]
Doradztwo: [phone]
Fax [phone]
[e-mail]
www.hach-lange.pl

HACH LANGE S.R.L.

Str. Căminului nr. 3,
et. 1, ap. 1, Sector 2
RO-021741 Bucureşti
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ro

HACH LANGE S.R.L.

Via Rossini, 1/A
I-20020 Lainate (MI)
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.it

HACH LANGE S.R.O.

Zastrčená 1278/8
CZ-141 00 Praha 4 - Chodov
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.cz

HACH LANGE

8, Kr. Sarafov str.
BG-1164 Sofia
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.bg

HACH LANGE S.L.U.

Edificio Seminario
C/Larrauri, 1C- 2ª Pl.
E-48160 Derio/Vizcaya
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.es

HACH LANGE S.R.O.

Roľnícka 21
SK-831 07 Bratislava –
Vaj nory



Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.sk

HACH LANGE SU
ANALİZ SİSTEMLERİ
LTD. ŞTİ.

Ilkbahar mah. Galip Erdem
Cad. 616 Sok. No:9
TR-Oran-Çankaya/ANKARA
Tel. [phone] 
Fax [phone]
[e-mail]
www.hach-lange.com.tr



37

Contact

HACH LANGE D.O.O.

Fajfarjeva 15
SI-1230 Domžale
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.si

HACH LANGE OOO

Finlyandsky prospekt, 4A
Business Zentrum “Petrovsky
fort”, R.803
RU-194044, Sankt-Petersburg
Tel. [phone]
Fax. [phone]
[e-mail]
www.hach-lange.com

ΗΑCH LANGE E.Π.Ε.

Αυλίδος 27
GR-115 27 Αθήνα
Τηλ . [phone]
Fax [phone]
[e-mail]
www.hach-lange.gr

HACH LANGE D.O.O.

Ivana Severa bb
HR-42 000 Varaždin
Tel. [phone]
Fax [phone]
[e-mail]
www.hach-lange.hr

HACH LANGE MAROC
SARLAU

Villa 14 – Rue 2 Casa
Plaisance
Quartier Racine Extension
MA-Casablanca 20000
Tél. [phone]
Fax [phone]
[e-mail]
www.hach-lange.ma



38

Index

B

Burette ..................................................................... 13

D

Data logger ................................................................ 5

E

Error messages ....................................................... 33

F

Flange tube connections .......................................... 17

K

Keypad ..................................................................... 20

M

Magnetic stirrer ........................................................ 16

Maintenance schedule ............................................. 29

P

Product contents ...................................................... 11

S

Safety information ...................................................... 7

Specifications ............................................................. 5

T

Titration stand .......................................................... 15

W

Warning labels ........................................................... 7

Warnings .................................................................. 33

39

40