Hanna Instruments HI 38019 User Manual

Instruction Manual

HI 38019

Total Chlorine

Low and Medium

Range

Test Kit with

Checker Disc

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

Range 0 to 0.7 mg/L (ppm) as Chlorine (LR)

0 to 3.5 mg/L (ppm) as Chlorine (MR)

Smallest Increment LR: 0.02 mg/L

MR: 0.1 mg/L
Analysis Method Colorimetric
Sample Size 10 mL (LR), 5 mL (MR)
Number of Tests 200
Case Dimensions 235x175x115 mm (9.2x6.9x4.5")
Shipping Weight 678 g (23.9 oz.)

SIGNIFICANCE AND USESIGNIFICANCE AND USE

SIGNIFICANCE AND USE

SIGNIFICANCE AND USESIGNIFICANCE AND USE

INSTRUCTIONSINSTRUCTIONS

INSTRUCTIONS

INSTRUCTIONSINSTRUCTIONS

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT

• To measure total chlorine in the 0-0.7 mg/L range,
verify that the mirror, its holder and the disc are pre­installed in the checker disc. If not, install them as
shown in the figure.

• Use the pipette to fill each glass
vial with 10 mL of sample (up to
the mark).

10 mL

• Remove the cap
and add 1 packet
of HI 93711-0 re­agent. Replace the
cap and mix.

• Wait for 2 minutes to allow reaction to
occur. This is the reacted sample.

www.hannainst.com

Dear Customer,
Thank you for choosing a Hanna Product.
Please read the instruction sheet carefully before using the

test kit. It will provide you with the necessary information
for correct use of the kit. If you need additional information,
do not hesitate to e-mail us at [e-mail].

Remove the chemical test kit from the packing material and
examine it carefully to make sure that no damage has
occurred during shipping. If there is any noticeable dam­age, notify your Dealer or the nearest Hanna office
immediately.

Each kit is supplied with:

HI 93711-0 Total Chlorine Reagent, packets (200 pcs);

•

• Demineralizer Bottle with filter cap for about 12 liters
of deionized water (depending on the hardness level
of water to be treated)

• 1 checker disc (containing a mirror, a mirror holder
and the disc);

• 2 glass vials with caps

• 1 plastic pipette (3 mL).

Note: Any damaged or defective item must be returned in

its original packing materials.

;

;

Chlorine is the most commonly used water disinfectant in
applications that vary from treatment of drinking water
and wastewater, pool and spa sanitization, to food process­ing and sterilization. Chlorine present in water binds with
bacteria, leaving only a part of the original quantity (free
chlorine) to continue its disinfecting action. If the free
chlorine level is improper with respect to pH, water will have
an unpleasant taste and odor and the disinfecting poten­tial of the chlorine will be diminished.

Free chlorine reacts with ammonium ions and organic
compounds to form chlorine compounds resulting in dimin­ished disinfecting capabilities compared with free chlorine.
Chlorine compounds together with chloramines form com­bined chlorine. Combined chlorine and free chlorine together
result in total chlorine.

While free chlorine has a much higher disinfectant potential,
combined chlorine has a much higher stability and has a
lesser volatility.

Note: mg/L is equivalent to ppm (parts per million).

CHEMICAL REACTIONCHEMICAL REACTION

CHEMICAL REACTION

CHEMICAL REACTIONCHEMICAL REACTION

The reaction between chlorine and the DPD reagent causes
a pink tint in the sample which is proportional to the
chlorine concentration.

ISTR38019 02/00 PRINTED IN ITALY

• Insert one of the vials into the left hand opening of the
checker disc. This is the blank.

• Remove the cap and
fill the Demineralizer
Bottle with tap wa­ter.

• Replace the cap
and shake gently for
at least 2 minutes.
The demineralized
water is now ready.

• Flip open the top of the Demineralizer Bottle cap. By
gently squeezing the bottle, add demineralized water
to the other vial up to the 20 mL mark. Replace the
cap and shake to mix.

• Remove the cap and in­sert the reacted sample
into the right hand open­ing of the checker disc.

• Hold the checker disc so
that a light source illumi­nates the samples
the top.

• Keep the checker disc at a distance of 30-40 cm (12­16") from the eyes to match the color. Rotate the disc
while looking at the color test windows and stop when
you find the color match. Read the value in the result
window and divide it by 5 to obtain mg/L (or ppm) of
Chlorine.

• To measure total chlorine
in the 0-3.5 mg/L range,
remove the disc, mirror
and its holder, if pre-in­stalled. Then install just
the disc as shown here.

from

• Use the pipette to fill each glass vial with
5 mL of sample (up to the mark) and
insert one of them into the left hand
opening of the checker disc. This is the
blank.

• Add to the other vial demineralized water up to the 10 mL
mark and shake to mix.

• Add 1 packet of HI
93711-0 reagent. Re­place the cap and
mix.

• Wait for 2 minutes to allow reaction to occur. This is the
reacted sample.

• Remove the cap and in­sert the reacted sample
into the right hand open­ing of the checker disc.

• Hold the checker disc so
that a light source illumi­nates the samples
the back of the windows.

from

5 mL

Caution: Ultraviolet radiation may cause fading of colors.

When not in use, keep the disc protected from light,
in a cool and dry place.

Interferences: bromine, iodine, fluorine, ozone, oxidized

manganese and chromium.

REFERENCESREFERENCES

REFERENCES

REFERENCESREFERENCES

Adaptation of the EPA recommended DPD method 330.5.

HEALTH AND SAFETYHEALTH AND SAFETY

HEALTH AND SAFETY

HEALTH AND SAFETYHEALTH AND SAFETY

The chemicals contained in this kit may be hazardous if
improperly handled. Read the relevant Health and Safety
Data Sheet before performing this test.

• Keep the checker disc at a distance of 30-40 cm (12­16") from the eyes to match the color. Rotate the disc
while looking at the color test windows and stop when
you find the color match. Read the value in the result
window directly in mg/L (or ppm) of Chlorine.

For best results: Perform the reading three times and take

the average value (divide by 3 the sum of the three
numbers). Intensely colored samples will make the color
matching difficult and they should be adequately treated
before performing the test. Suspended matter in large
amounts should be removed by prior filtration.