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9- Read off the milliliters of titration solution from the
syringe scale and multiply by 100000 to obtain mg/L
(ppm) of Chloride.
Low Range - 500 to 10000 mg/L of Chloride
If the result is lower than 5000 mg/L,
the precision of the test can be improved
by following the steps below.
2.5 mL
10- Remove the cap from the large plas-
tic vessel and use the 3 mL plastic
pipette to add 2.5 mL of sample.
11- Follow the instructions from step 4 to 8.
12- Read off the milliliters of titration solution from the syringe
scale and multiply by 10000 to obtain mg/L (ppm) of
Chloride.
Note: If the sample pH is lower than 2 or higher than 11,
add respectively sodium hydroxide or sulfuric acid to
adjust the pH at a value between 7 and 10.
During titration sample becomes turbid.
Interferences: Bromide, iodide, cyanide and sulfide; ortho-
phosphate above 250 ppm and polyphosphate above
25 ppm precipitate as silver salts; iron above 10
ppm masks the endpoint. Intensely colored samples
should be adequately treated before performing the
test. Suspended matter in large amounts should be
removed by prior filtration.
REFERENCES
REFERENCES
REFERENCES
REFERENCES
REFERENCES
Official Methods of Analysis, A.O.A.C., 14
Edition, 1984, p. 625.
th
Standard Methods for the Examination of Water and
Wastewater, 16
Edition, 1985, pages 288-290.
th
HEALTH AND SAFETY
HEALTH AND SAFETY
HEALTH AND SAFETY
HEALTH AND SAFETY
HEALTH AND SAFETY
The chemicals contained in this test kit may be hazardous if
improperly handled. Read the relevant Health and Safety
Data Sheets before performing the test.
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