Hanna Instruments HI 38015 User Manual

Page 2

R E F E R E N C E S

HEALTH AND SAFETY

Official Methods of Analysis, A.O.A.C., 14

Edition, 1984, p.625.

Standard Methods for the Examination of Water and
Wastewater, 16

Edition, 1985, pages 288-290.

2.5 mL

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.

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.

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.