LaMotte 3633-05 User manual

Fresh Water
Aquaculture

Test Kit Instruction Manual

Code 3633-05

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This booklet provides step-by-step detailed instructions for the Code 3633-05 test
kits. It is important to review these instructions thoroughly
perform the tests by the short-form instructions contained in the case lid.
To order individual reagents or test kit components, use the specifi ed code number.

before attempting to

Testing Hints / Reagent Care ........................................................................ 4

Analytical Technique ...................................................................................... 5

General Safety Information ........................................................................... 6

Test Methods ................................................................................................... 7

Test Procedures

Introduction ............................................................................................................ 9

Alkalinity ................................................................................................................ 10

Ammonia Nitrogen ................................................................................................ 11

Carbon Dioxide ..................................................................................................... 14

Chloride .................................................................................................................. 15

Dissolved Oxygen .................................................................................................. 17

Hardness ................................................................................................................ 22

Nitrite Nitrogen ..................................................................................................... 24

pH ............................................................................................................................ 25

Kit Diagram ..................................................................................................... 26

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TESTING HINTS / REAGENT CARE

Tightly close all reagent
containers immediately
after use. Be sure not to
interchange caps and
pipets from diff erent
containers.

Wipe up any reagent chemical spills,
liquid or powder, as soon as they
occur. Refer to label and accompanying

reagent disposal.

Avoid prolonged
exposure of equipment
and reagents to direct
sunlight. Protect
reagents and
components from
extreme heat and cold.

Use care when dispensing or handling
all reagents. Some reagents also may
cause permanent stains if spilled.

4

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ANALYTICAL TECHNIQUE

1. Clean glassware is a must for accurate results.
Thoroughly rinse test tubes before and after
each test. Caps and stoppers should also be
cleaned after each use.

2. Use test tube caps, not your fi ngers, to cover test
tubes and fl asks during shaking or mixing.

3. When adding sample to calibrated test tube, be
sure vial is fi lled to the appropriate mark. The
bottom of the liquid (meniscus) should be level
with the desired mark. (Fig. 1)

4. When dispensing reagents from bottles fi lled
with dropper plug and cap, be sure to hold
bottle vertically and gently squeeze to dispense
the appropriate number of uniform drops.
(Fig. 2)

5. For those reagents to be added with the screwcap
pipet assemblies
on bottle and replace with the screwcap pipet.
NOTE: Place the polyseal caps back on the
reagent bottles for longer periods of storage. Be
sure that both pipet assemblies and polyseal caps
are thoroughly cleaned before placing on bottles
to avoid contamination.

6. When dispensing reagents from pipets, hold
pipet vertically to assure uniform drop size. This
is extremely important when performing drop
count titrations. (Fig. 3)

7. To fi ll pipets, squeeze rubber bulb and immerse
into reagent. Release bulb to fi ll. (Fig. 4)

8. To accurately dispense powdered reagents with
spoon, tap spoon on edge of reagent container
to remove excess reagent. (Fig. 5)

9. When performing tests that include Octa-Slide
Comparators, the comparator should be
positioned between the operator and non-direct
sunlight. This allows the light to enter through
the

light-diff using screen at the back of the

comparator for optimum

enclosed, remove polyseal cap

color comparison.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

5

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GENERAL SAFETY PRECAUTIONS

Safety

Data

Store the test kit in a
cool dry area.

Sheet

Read all instructions
and note precautions
before performing
the test procedure.
Read all Safety Data
Sheets (SDS) at

Read the labels on all
reagent

bottles. Note
warnings and fi rst aid
information.
marked with a *
on

instructions are
considered possible
health hazards.

Avoid contact between reagent chemicals
and skin, eyes, nose, and mouth.

Reagents

*WARNING: Reagents marked with an * are considered to be
potential health hazards. To view or print a Safety Data Sheet

Keep all equipment
and reagent
chemicals out of
the reach of
young children.

Wear safety glasses when performing
test procedures.

6

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TEST METHODS

This test kit uses two basic analytical procedures common to fi eld test kits. A brief
explanation of each follows:

COLORIMETRIC: OCTA-SLIDE 2 VIEWER

In a visual colorimetric test, a sample is treated with reagent(s) to produce a color
reaction, generally in proportion to the amount of test factor present. The sample color
is then compared against color standards representing known concentrations of the
factor being tested over a specifi c range.

1

123

4 Note:

4

Insert Octa­Slide 2
into the Octa­Slide 2
(1101).

Match sample color
to color standard.
Record results.

Bar

Viewer

23

Insert test tube
containing reacted
sample into the
Octa-Slide 2

Viewer (1101).

Hold the Octa-Slide 2
Viewer so that non­direct light enters
through the
back of
the viewer.

Note:

If sample color is between two standards, the midpoint
is taken as the result.

If the sample is darker than the highest standard, a
dilution may be performed on a fresh sample, and the
test repeated to bring the concentration within range.

DILUTIONS

The calibrated test tubes (0106) included in this kit may be used to perform dilutions
for the Ammonia Nitrogen and Nitrite Nitrogen tests. Distilled or deionized water is
needed to perform dilutions.
The following table provides a quick reference guide for dilutions of various
proportions. Once the dilution is prepared, use this diluted sample to perform the test,
and multiply the result by the dilution factor to obtain the actual concentration.

Sample Size Distilled Water to Bring to 10 mL Dilution Factor

5.0 mL 5.0 mL 2

2.5 mL 7.5 mL 4

7

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TITRIMETRIC: DIRECT READING TITRATOR

In a titrimetric method, titrating solution (or titrant) is added to a treated sample
until a color change occurs. The volume of titrant required to reach this endpoint is
proportional to the concentration of the factor being tested. Direct Reading Titrators
provide results directly in the appropriate concentration for the test – no counting of
drops, no calculations.

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

Plunger Barrel Adapter Tip

The Titrator consists of a plastic barrel, a plastic plunger, and a plastic adapter tip. The
adapter tip reduces the size of the drops that are dispensed, increasing the precision of
the test results. DO NOT remove the plunger or adapter tip from the Titrator.

1

12 3

Fill the test
tube to the
appropriate
line with
sample water.

45

To fi ll Titrator, slowly

4

withdraw the plunger
until the bottom of the
plunger is
opposite
the zero
mark on
the scale.

7

6

Insert the Titrator
into the center hole
of the test tube
cap. While gently
swirling tube, add
titrating solution
one drop at a time
until the desired
color changes occur.
Follow individual
test instructions.

23

Add reagents
as specifi ed
in the instructions
for the individual
test method. Cap
with the special test
tube cap. Mix by
swirling gently.

If small air
appear in
them by
the barrel
the

titration solution back

into

the reagent container.

bubbles
the barrel, expel
partially fi lling

and pumping

Depress the
Titrator plunger
to expel air. Insert
Titrator into the
plastic fi tting of
the titrating
solution bottle
and invert.

6

Turn the bottle

5

right-side-up
and remove the
Titrator.

Repeat until bubble
disappears.

89

7

8

When testing is
complete, discard
titrating solution in

Read the test
result directly
from the scale
where the large
ring on the Titrator
meets the Titrator barrel.

Titrator. Do not return
the titrant to the
reagent bottle. Rinse
Titrator and titration
tube thoroughly. Do
not remove the plunger
or the adapter tip from
the Titrator.

8

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TEST PROCEDURES

INTRODUCTION

Proper control of water quality is an essential part of successful aquaculture operation.
Immediate test results provided by on-site water analysis equipment can confi rm a healthy
environment, or give early warning signals for required treatment.

1. Develop a routine testing schedule.

2. Keep records! Historical data is extremely important if treatments are required. Note
environmental conditions, fi sh activity, feeding habits, etc.

3. Observe fi sh to note any particular behavior or feeding rates, as this may be a sign
of stress.

4. Stable characteristics, such as alkalinity and hardness, do not have to be tested as
frequently as ones that fl uctuate, such as ammonia nitrogen, nitrite nitrogen, pH,
dissolved oxygen and temperature. Keep in mind that these factors fl uctuate throughout
the day and in some cases are interdependent.

5. Be alert to sudden changes in one factor, as it may be a clue to perform further analysis.

9

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Alkalinity

DESCRIPTION CODE

BCG/MR Indicator 2311-PG-E

*Alkalinity Titration Reagent B *4493DR-H

Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap 0608

Direct Reading Titrator, 0-200 Range 0382

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

The Direct Reading Titrator is calibrated in terms of total alkalinity expressed as parts
per million (ppm) Calcium Carbonate (CaCO3). Each minor division on the Titrator
scale equals 4 ppm CaCO3.

ALKALINITY TEST PROCEDURE

1

1

Fill the test
tube (0608)
to the 5 mL
line with the
sample water.

4

45

Fill Direct
Reading
Titrator
(0382) with
*Alkalinity
Titration
Reagent B
(4493DR).

7

7

Read the test result
directly from the
scale where the large
ring on the Titrator
meets the Titrator barrel.
Record Total Alkalinity as ppm
Calcium Carbonate (CaCO3).

23

23

Add 4 drops
of BCG-MR
Indicator
(2311-PG).

5

Insert the
Titrator into
the center
hole of the
test tube cap.

8

Note:

If the plunger tip reaches the bottom
line on the scale (200 ppm) before the
endpoint color change occurs, refi ll
the Titrator and continue the titration.

When recording the test result, be sure
to include the value of the original
amount of reagent dispensed (200 ppm).

Cap and
mix.
Solution
will turn
blue-green.

6

6

While gently
swirling the tube,
slowly press the
plunger to titrate
until blue-green
color changes
to pink.

10

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Ammonia Nitrogen

DESCRIPTION CODE

*Salicylate Ammonia #1 *3978LWT-G

*Salicylate Ammonia #2 *3979WT-G

Salicylate Ammonia #3 3982WT-G

Test Tube, 2.5-5-10 mL, plastic, w/cap 0106

Octa-Slide 2 Viewer 1101

Ammonia Nitrogen Octa-Slide 2 Bar, 0-2.0 ppm, Fresh Water 3441-01-FW

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

11

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AMMONIA NITROGEN TEST PROCEDURE

12 3

4

Cap and mix.

7

Insert Ammonia
Nitrogen Octa­ Slide 2 Bar
(3441-01-FW)
into the
Octa-Slide 2
Viewer (1101).

Wait 1 minute.

01:00

Fill a test tube
(0106) to the
5 mL line
with the water
sample.

5

Add 7 drops
of *Salicylate
Ammonia #2
(3979WT).

8

Add 7 drops
of Salicylate
Ammonia #3
(3982WT).

6

Cap and mix.

9

Cap and mix.

Add 10 drops
of *Salicylate
Ammonia #1
(3978WT).

10

12

11

Wait 20 minutes.

20:00

Calculations:

To express results as Ammonia (NH3):

Ammonia (NH

To express results as Ammonium (NH

Ammonium (NH

) = ppm Ammonia Nitrogen (NH3-N) x 1.2

3

+

) = ppm Ammonia Nitrogen (NH3-N) x 1.3

4

Insert test
tube into
Octa-Slide 2
Viewer.

12

Match sample
color to a
color standard.
Record as ppm
Ammonia
Nitrogen.

+

):

4

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AMMONIA IN AQUARIUMS

Ammonia in water occurs in two forms: toxic unionized ammonia (NH3) and the
relatively non-toxic form, ammonium ion (NH
forms as ammonia-nitrogen (NH3-N) to give the total ammonia-nitrogen concentration
in water. The actual proportion of each compound depends on temperature, salinity,
and pH. A greater concentration of unionized ammonia is present when the pH value
and salinity increase.

1. Consult the table below to fi nd the percentage that corresponds to the temperature,
pH and salinity of the sample.

2. To express the test result as ppm Unionized Ammonia Nitrogen (NH3-N), multiply
the total ammonia-nitrogen test result by the percentage from the table.

3. To express the test result as ppm Ionized Ammonia Nitrogen (NH4-N), subtract the
unionized ammonia nitrogen, determined in Step 2, from the total ammonia-nitrogen.

Percentage of Free Ammonia as (NH3) in Freshwater1 (FW)

and Seawater2 (SW) at varying pH and temperature.

10°C 15°C 20°C 25°C

pH FW1 SW2 FW SW FW SW FW SW

7.0 0.19 0.27 0.40 0.55

7.1 0.23 0.34 0.50 0.70

7.2 0.29 0.43 0.63 0.88

7.3 0.37 0.54 0.79 1.10

7.4 0.47 0.68 0.99 1.38

7.5 0.59 0.459 0.85 0.665 1.24 0.963 1.73 1.39

7.6 0.74 0.577 1.07 0.836 1.56 1.21 2.17 1.75

7.7 0.92 0.726 1.35 1.05 1.96 1.52 2.72 2.19

7.8 1.16 0.912 1.69 1.32 2.45 1.90 3.39 2.74

7.9 1.46 1.15 2.12 1.66 3.06 2.39 4.24 3.43

8.0 1.83 1.44 2.65 2.07 3.83 2.98 5.28 4.28

8.1 2.29 1.80 3.32 2.60 4.77 3.73 6.55 5.32

8.2 2.86 2.26 4.14 3.25 5.94 4.65 8.11 6.61

8.3 3.58 2.83 5.16 4.06 7.36 5.78 10.00 8.18

8.4 4.46 3.54 6.41 5.05 9.09 7.17 12.27 10.10

8.5 5.55 4.41 7.98 6.28 11.18 8.87 14.97 12.40

1

Freshwater data from Trussel (1972).

2

Seawater values from Bower and Bidwell (1978). Salinity for Seawater values = 34 ppt at an

ionic strength of 0.701 m.

FOR EXAMPLE:
A fresh water sample at 20°C has a pH of 8.5 and the test result is 1.0 ppm as total
Ammonia-Nitrogen.

1. The percentage from the table is 11.18% (or 0.1118).

2. 1 ppm total Ammonia-Nitrogen x 0.1118 = 0.1118 ppm Unionized Ammonia­Nitrogen

3. Total Ammonia-Nitrogen 1.0000 ppm

Unionized Ammonia-Nitrogen - 0.1118 ppm

Ionized Ammonia-Nitrogen = 0.8882 ppm

+

). This test method measures both

4

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Carbon Dioxide

DESCRIPTION CODE

*Phenolphthalein Indicator, 1% *2246-E

Carbon Dioxide Reagent B 4253DR-H

Direct Reading Titrator, 0-50 Range 0380

Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap 0608

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

CARBON DIOXIDE TEST PROCEDURE

1

1

Fill the test tube
(0608) to the
20 mL line
with the
sample water.

3

45

Fill Direct Reading
Titrator (0380) with
Carbon Dioxide
Reagent B
(4253DR).

6

7

Read the test result
directly from the
scale where the large
ring
meets the Titrator
barrel. Record as
Carbon Dioxide.

water

sample

on the Titrator

23

Note:

For best results, test
a freshly obtained
sample, and avoid
splashing or prolonged
contact with air.

4

Insert the
Titrator into
the center
hole of the
test tube cap.

Note:

Result:

40 ppm

The Titrator is calibrated in terms
of carbon dioxide expressed as
ppm Free CO2. Each minor division
on the Titrator scale equals 1.0
ppm CO2.

2

Add 2 drops of
*Phenolphthalein
Indicator, 1%
(2246). If sample
turns red, no free
carbon dioxide is
present. If sample
is cololess,
proceed to Step 3.

5

6

While gently
swirling the
tube, slowly
press the
plunger to
titrate until a
faint pink color
develops and
persists for 30
seconds.

14

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Chloride

DESCRIPTION CODE

*Chloride Reagent #1 *4504-E

*Chloride Reagent #2 *4505DR-H

*Phenolphthalein Indicator, 1% *2246-E

*Sulfuric Acid, 0.5N *6090-E

Direct Reading Titrator, 0-200 Range 0382

Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap 0608

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

The Titrator is calibrated in terms of chloride expressed as ppm Cl_. Each minor division
on the Titrator scale equals 4.0 ppm Cl_.

HIGH CHLORIDE AND SALINITY READINGS

For high chloride and salinity readings the sample must be carefully diluted to bring it
within a practical range for titration. Dilutions of 1 to 20 or 1 to 100 are recommended.
(For example: 1 mL of sample water is diluted to a total of 20 mL with distilled water.
This is a 1 to 20 dilution.) Titration tube is then fi lled to 15 mL line with diluted
sample, and the titration is performed as described. The Titrator reading is multiplied
by the appropriate conversion factor given below for parts per million (ppm), parts per
thousand (ppt), or percent (%) Chloride.

1 to 20 DILUTION

ppm chloride = Titrator Reading x 20

ppt chloride = Titrator Reading x 0.02

% chloride = Titrator Reading x 0.002

1 to 100 DILUTION

ppm chloride = Titrator Reading x 100

ppt chloride = Titrator Reading x 0.1

% chloride = Titrator Reading x 0.01

To convert parts per thousand (ppt) Chloride to parts per thousand (ppt) Salinity use
the following formula:

ppt salinity = (1.805 x ppt chloride ) + 0.03

15

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CHLORIDE TEST PROCEDURE

123

Fill the test tube
(0608) to the
15 mL line
with the
sample water.

4

Cap and swirl
to mix.
Solution will
turn yellow.

78

While gently
swirling the
tube, slowly
press the
plunger to
titrate until
yellow color
changes from
yellow to orange
or orange-red.

Add one drop of
*Phenolphthalein
Indicator, 1%
(2246). If sample
turns pink, add
*Sulfuric Acid,

0.5N (6090) one
drop at a time,
mixing after each
drop, until pink
color disappears.

5

Fill Direct
Reading
Titrator (0382)
with *Chloride
Reagent #2
(4505DR).

Read the test result directly
from the
ring
Titrator barrel. Record as ppm
Chloride.

scale where the large

on the Titrator meets the

Add 3 drops
of *Cloride
Reagent #1
(4504).

6

Insert the
Titrator into
the center
hole of the
test tube cap.

Note:

If the plunger tip reaches the bottom line on the scale (200 ppm) before
the endpoint color change occurs, refi ll the Titrator and continue the
titration. When recording the test results be sure to include the value of the
original amount

16

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of reagent dispensed (200 ppm).

Dissolved Oxygen

DESCRIPTION CODE

*Manganous Sulfate Solution *4167-G

*Alkaline Potassium Iodide Azide Reagent *7166-G

*Sulfuric Acid, 1:1 *6141WT-G

Sodium Thiosulfate, 0.025N 4169-H

Starch Indicator Solution 4170PS-G

Direct Reading Titrator, 0-10 Range 0377

Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap 0608

Pipet, plain, plastic, w/cap 0392

Water Sampling Bottle, 60 mL, glass 0688-DO

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

The Titrator is calibrated in terms of Dissolved Oxygen expressed as ppm Dissolved
Oxygen. Each minor division on the Titrator scale equals 0.2 ppm Dissolved Oxygen.

17

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DISSOLVED OXYGEN TEST PROCEDURE

Part 1 - Collecting the Water Sample

1

Rinse the Water
Sampling Bottle
(0688-DO) with
the sample water.

3

Remove the cap and allow
the bottle to fi ll.

5

2

Tightly cap the bottle, and
submerge it to the desired depth.

4

Tap the sides of the bottle to
dislodge any air bubbles.

6

18

Replace the cap while the
bottle is still submerged.

Retrieve the bottle
and make sure that
no air bubbles are
trapped inside.

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Part 2 - Adding the Reagents

NOTE: Be careful not to introduce air into the sample while adding
the reagents.

1

Remove the
cap from the
bottle.

3

Cap the bottle and mix by
inverting several times.
A precipitate will form.

5

Add 8 drops of
*Sulfuric Acid, 1:1
(6141WT).

2

Immediately add 8
drops of *Manganous
Sulfate Solution (4167)
and add 8 drops of
*Alkaline Potassium
Iodide Azide (7166).

4

Allow the precipitate
to settle below the
shoulder of the bottle.

6

Cap and gently invert the bottle
to mix the contents until the
precipitate and the reagent have
totally dissolved. The solution
will be clear
yellow to
orange if the
sample contains
dissolved oxygen.

NOTE: At this point the sample has been “fi xed” and contact between the
sample and the atmosphere will not aff ect the test result. Samples may be
held at this point and titrated later.

19

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Part 3 - The Titration

1

Fill the titration tube
(0608) to the 20 mL line
with the fi xed sample.
Cap the tube.

3

Insert the Titrator into
the plug in the top of
the Sodium Thiosulfate,

0.025N (4169) titrating
solution.

0

.

1

0

0

.

2

.

3

0

0

.

4

5

0

.

0

.

6

.

7

0

8

0

.

.

9

0

0

1

.

2

0

0

0.1

0.1

Depress plunger of

0.2

0.2

0.3

0.3

0.4

0.4

the Titrator (0377).

0.5

0.5

0.6

0.6

0.7

0.7

0.8

0.8

0.9

0.9

1.0

1.0

4

Invert the bottle and
slowly withdraw the
plunger until the large
ring on the plunger is
opposite the zero (0)
line on the scale.

NOTE: If small air bubbles appear in the titrator barrel, expel them by
partially fi lling the barrel and pumping the titration solution back into the
reagent container. Repeat until bubble disappears.

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

20

5

Turn the bottle
upright and remove
the Titrator.

Note:

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

If the sample is a
very pale yellow,
go to Step 9.

continued . . .

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6

Insert the tip of
the Titraror into
the opening of the
titration tube cap.

7

Slowly depress the
plunger to dispense the
titrating solution until
the yellow-brown color
changes to a very pale
yellow. Gently swirl the
tube during the titration
to mix the contents.

8

Carefully remove
the Titrator and
cap. Do not disturb
the Titrator plunger.

10

Cap the titration
tube. Insert the tip
of the Titrator into
the opening of the
titration tube cap.

Read the test result directly from the scale

12

where the large ring on the Titrator meets
the Titrator barrel. Record as ppm Dissolved
Oxygen. Each minor division on the Titrator
scale equals 0.2 ppm.

9

Add 8 drops of Starch
Indicator Solution
(4170WT). The sample
should turn blue.

11

Continue titrating until the blue
color disappears and the solution
becomes colorless.

NOTE: If the plunger ring
reaches the bottom line on

the scale (10 ppm) before the
endpoint color change occurs,
refi ll the Titrator and continue
the titration. Include the value
of the original
reagent dispensed

when recording the test result.

amount of

(10 ppm)

NOTE: When testing is complete, discard the
titrating solution in the Titrator. Rinse Titrator
and titration tube thoroughly. DO NOT remove
plunger or adapter tip.

21

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Hardness

DESCRIPTION CODE

*Hardness Reagent #5 *4483-E

*Hardness Reagent #6 Solution *4485-E

Hardness Reagent #7 4487DR-H

Test Tube, 5-10-12.9-15-20-25, glass, w/cap 0608

Direct Reading Titrator, 0-200 Range 0382

Pipet, 0.5 mL, plastic 0353

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

The Titrator is calibrated in terms of Total Hardness expressed as parts per million (ppm)
Calcium Carbonate (CaCO3). Each minor division on the Titrator scale equals
4 ppm CaCO3.

ANALYSIS OF HARDNESS IN SALT WATER

When sea and estuarine waters containing very high levels of mineral salts are to be tested,
the sample must be diluted before titration. This test set is supplied with a calibrated pipet
for perforning the simple, convenient dilution described below:

1

Use the 0.5 mL
pipet (0353) to
add 0.5 mL of the
salt water to the
test tube (0608).

2

Fill the test tube
to the 12.9 mL
line with distilled
water (a 1 to

25.8 dilution).

3

Follow Steps 2 through
9 under Hardness Test
procedure. Multiply
reading by 25.8. Record
as ppm Total Hardness
CaCO3.

22

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HARDNESS TEST PROCEDURE

123

Add 5 drops
Fill the test tube
(0608) to the

12.9 mL line

water

sample

with the
sample water.

of *Hardness

Reagent #5

(4483).

Cap and
swirl to mix.

4

5

Cap and swirl to mix.
Solution will
turn red if

Add 5 drops
of *Hardness
Reagent #6
Solution (4485).

hardness is
present.
If solution is
blue, there is
no

measureable
amount

of hardness.

78

Insert the Titrator
into the center hole
of the test tube cap.

While gently
swirling the tube,

0

slowly press the

0.1

0.2

0.3

0.4

plunger to titrate

0.5

0.6

0.7

0.8

until red color

0.9

1.0

changes to clear
blue.

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

6

1.0

60

80

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

Fill Direct Reading
Titrator (0382) with
Hardness Reagent 7
(4487DR).

9

Result:

60 ppm

Read
the test
result
directly
from the
scale where the large ring
on the Titrator meets the
Titrator barrel. Record as
ppm Total Hardness
(CaCO3).

23

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Nitrite Nitrogen

DESCRIPTION CODE

*Mixed Acid Reagent *V-6278-H

*Color Developing Reagent *V-6281-D

Spoon, 0.1 g, plastic 0699

Test Tube, plastic, w/cap 0106

Dispenser Cap 0692

Octa-Slide 2 Viewer 1101

Nitrite Nitrogen Octa-Slide 2 Bar, 0.05-0.8 ppm 3437-01

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

NOTE: Place Dispenser Cap (0692) on *Mixed Acid Reagent (V-6278-H). Save this
cap for refi ll reagents.

1

1

Insert Nitrite­Nitrogen
Octa-Slide 2
Bar (3437-01)
into

the
Octa-Slide 2
Viewer (1101).

45

4

Use the 0.1 g
spoon (0699)
to add 0.1 g
of *Color
Developing
Reagent
(V-6281).

7

7

Insert test tube
into Octa-Slide 2
Viewer (1101).

23

23

Fill a test tube
(0106) to the

5

8

89

2.5 mL line
with the water
sample.

Cap and mix
by inverting
for one minute.

Match sample color
to color standard.
Record results as
ppm Nitrite
Nitrogen.

Dilute to the

5mL line with
*Mixed Acid
Reagent
(V-6278).

6

6

Wait 5 minutes.

05:00

9

To convert to
multiply results by 3.3.
Record as ppm

Nitrite-N (NO3-N)
ppm Nitrite (NO

Nitrite,

Nitrite.

x 3.3 =

-)

2

24

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pH

DESCRIPTION CODE

*Wide Range Indicator *2218-G

Test Tube, plastic, w/cap 0106

Octa-Slide 2 Viewer 1101

Wide Range pH Octa-Slide 2 Bar, 5.0-10.0 3483-01

*WARNING: Reagents marked with an * are considered to be potential health hazards.
See page 6 for more information.

1

Insert Wide
Range pH
Octa-Slide 2 Bar
(3483-01) into
the Octa-Slide 2
Viewer

(1101).

45

Cap and mix.

23

Fill a test tube
(0106) to the
10 mL line
with the water
sample.

Insert test tube
into Octa-Slide 2
Viewer (1101).

Add 8 drops
of *Wide Range
pH Indicator
(2218).

6

Match sample
color to color
standard.
Record as pH.

25

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4170

PS-G

6141

WT-G

7166-G

4167-G

-DO

0688

0377

0382

0380

4169-H

4505DR-H

4253DR-H

0106

0382

6090-E

2246-E

Space for 1066 without case

0699

V-6281-D

4487DR-H

4504-E

0382

V-6278-H

0353

4485-E

0608

4493DR-H

4483-E

0608

2311-EG-E

V-6278-H

1101

3441-01-FW 3437-01

3483-01

0106

0106

0106

-G

3982WT

2218-G

-G

3979WT

0688

-H

3978LWT

3633-05

26

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