Instruction Manual
HI 38019
Total Chlorine
Low and Medium
Range
Test Kit with
Checker Disc
www.hannainst.com
DearCustomer,
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,
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 dam-
age, 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.
ISTR38019 02/00 PRINTED IN ITALY
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 process-
ing 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
chlorinelevelisimproperwithrespecttopH,waterwillhave
an unpleasant taste and odor and the disinfecting poten-
tial of the chlorine will be diminished.
Free chlorine reacts with ammonium ions and organic
compounds to form chlorine compounds resulting in dimin-
ished disinfecting capabilities compared with free chlorine.
Chlorine compounds together with chloramines form com-
binedchlorine. Combined chlorine and free chlorine together
result in total chlorine.
Whilefreechlorinehas a much higher disinfectant potential,
combined chlorine has a much higher stability and has a
lesservolatility.
Note: mg/L is equivalent to ppm (parts per million).
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SIGNIFICANCE AND USESIGNIFICANCE AND USE
SIGNIFICANCE AND USESIGNIFICANCE AND USE
SIGNIFICANCE AND USE
CHEMICAL REACTIONCHEMICAL REACTION
CHEMICAL REACTIONCHEMICAL REACTION
CHEMICAL REACTION
INSTRUCTIONSINSTRUCTIONS
INSTRUCTIONSINSTRUCTIONS
INSTRUCTIONS
The reaction between chlorine and the DPD reagent causes
a pink tint in the sample which is proportional to the
chlorineconcentration.
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 pre-
installed 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).
• 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 wa-
ter.
• Replace the cap
andshakegentlyfor
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 add 1 packet
of HI 93711-0 re-
agent. Replace the
cap and mix.
• Wait for 2 minutes to allow reaction to
occur. This is the reacted sample.
• Remove the cap and in-
sert the reacted sample
into the right hand open-
ing of the checker disc.
• Hold the checker disc so
that a light source illumi-
nates the samples from
the top.
• Keep the checker disc at a distance of 30-40 cm (12-
16") 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-in-
stalled. Then install just
the disc as shown here.
10 mL
Range 0 to 0.7 mg/L (ppm) as Chlorine (LR)
0 to 3.5 mg/L (ppm) as Chlorine (MR)
SmallestIncrement LR: 0.02 mg/L
MR: 0.1 mg/L
AnalysisMethod Colorimetric
Sample Size 10 mL (LR), 5 mL (MR)
Number of Tests 200
CaseDimensions 235x175x115 mm (9.2x6.9x4.5")
Shipping Weight 678 g (23.9 oz.)
