Hanna Instruments HI 3815 User manual

SPECIFICATIONS
Instruction Manual
www.hannainst.com
Dear Customer,
Thank you for choosing a Hanna Product. Please read the
instructions carefully before using the chemical test kit. It
will provide you with the necessary information for correct
use of the kit.
HI 3815
Chloride Test Kit
ISTR3815R3 07/02 PRINTED IN ITALY
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:
• Diphenylcarbazone Indicator, 1 bottle with dropper
(15 mL);
• Nitric Acid Solution, 1 bottle with dropper (30 mL);
• HI 3815-0 Mercuric Nitrate Solution, 1 bottle (120
mL);
• 2 calibrated vessels (10 and 50 mL);
• 1 calibrated syringe with tip.
Note:any damaged or defective item must be returned in
its original packing materials.
Chloride ions are one of the major inorganic anions in water
and wastewater. Although high concentrations of chloride in
water are not known to be toxic to humans, the regulation
of its concentration is mainly due to taste. It is essential to
monitor chloride concentration in boiler systems to prevent
damage of metal parts. In high levels, chloride can corrode
stainless steel and be toxic to plant life.
The Hanna Chloride Test Kit is equipped with all you need
to determine chloride level of water. The kit is quick, easy to
use and portable. The design makes the kit easy to handle
and, except for HI 3815 Mercuric Nitrate solution, practi-
cally prevents accidental injury or damage due to spills.
Note:mg/L is equivalent to ppm (parts per million).
SIGNIFICANCE AND USE
CHEMICAL REACTION
The chloride level in mg/L (ppm) is determined by a mercu-
ric nitrate titration. The pH is lowered to approximately 3 by
addition of nitric acid. Mercuric ions react with chloride ions
to form mercuric chloride. When excess mercuric ions is
present, it complexes with diphenylcarbazone to form a
purple solution. The color change from yellow to purple
determines the end point of this titration.
Range 0 to 100 mg/L (ppm) Cl–
0 to 1000 mg/L (ppm) Cl–
Smallest Increment 1 mg/L [in the 0-100 mg/L range]
10 mg/L [in the 0-1000 mg/L range]
Analysis Method Mercuric nitrate titration
Sample Size 5 mL and 50 mL
Number of Tests 110 (average)
Case Dimensions 200x120x60 mm (7.9x4.7x2.4")
Shipping Weight 460 g (1 lb.)
SPECIFICATIONS INSTRUCTIONS
READ ALL THE INSTRUCTIONS BEFORE USING THE TEST KIT
LOOK AT THE BACK PAGE FOR THE ILLUSTRATED PROCEDURE
High Range – 0 to 1000 mg/L Chloride
• Remove the cap from the small plas-
tic vessel. Rinse the plastic vessel
with water sample, fill to the 5 mL
mark and replace the cap.
• Add 2 drops of Diphenylcarbazone Indicator through
the cap port, and mix carefully swirling the vessel in
tight circles. The solution will become a reddish-violet
color.
• While swirling the vessel, add the
Nitric Acid Solution dropwise until
the solution turns yellow.
• Take the titration syringe, and push the
plunger completely into the syringe. Insert
tip into HI 3815-0 Mercuric Nitrate Solution
and pull the plunger out until the lower
edge of the plunger seal is on the 0 mL
mark of the syringe.
• Place the syringe into the cap of the plastic
vessel and slowly add the titration solution
dropwise, swirling to mix after each drop.
Continue adding titration solution until the
solution in the plastic vessel changes from
yellow to violet.
• Read off the milliliters of titration solution from the
syringe scale and multiply by 1000 to obtain mg/L
(ppm) chloride.
x 1000 = Cl–
Low Range – 0 to 100 mg/L Chloride
If the result is lower than 100 mg/L, the precision of the
test can be improved by following the steps below.
• Remove the cap from the large plastic
vessel. Rinse the plastic vessel with the
water sample, fill to the 50 mL mark
and replace the cap.
• Proceed with the test as for high range measurement.
• Read off the milliliters of titration solution from the syringe
scale and multiply by 100 to obtain mg/L (ppm) chloride.
Note:push and twist pipet tip onto tapered end of
syringe ensuring an air-tight fit.
To improve the accuracy of the test: use a 5mL pipette for
HR or 50mL pipette for LR to deliver the exact volume of
sample to the plastic vessel.
After use, rinse the calibrated plastic vessel a couple of times
with water, or it may become permanently stained.
x 100 = Cl–
REFERENCES
Official Methods of Analysis, A.O.A.C., 14th Edition, 1984,
p. 625.
Standard Methods for the Examination of Water and Waste-
water, 16th Edition, 1985, pages 288-290.
HEALTH AND SAFETY
The chemicals contained in this test kit may be hazardous if
improperly handled. Read Health and Safety Data Sheets
before performing the test.

HI 3815 CHLORIDE TEST KIT
5
2 3 41
5 mL sample 50 mL sample
until solution turns yellow
DIPHENYLCARBAZONE
INDICATOR
NITRIC ACID
SOLUTION