LaMotte CHLORIDE TEST KIT PSC-DR - Manual (Page 2)

CHLO RIDE TEST KIT
DIRECT READING TITRATOR METHOD
MODEL PSC-DR • CODE 4503-DR
QUANTITY CONTENTS CODE
15 mL *Chloride Reagent #1 *4504-E
60 mL *Chloride Reagent #2 *4505DR-H
15 mL *Phenolphthalein Indicator, 1% *2246-E
15 mL *Sulfuric Acid, 0.5N *6090-E
1 Test Tube, 5-10-15 mL, glass, w/cap 0778
1 Direct Reading Titrator, 0-200 0382
*WARNING: Reagents marked with a * are considered hazardous substances.
Material Safety Data Sheets (MSDS) are supplied for these reagents. For your
safety, read label and accompanying MSDS before using.
To order individual reagents or test kit components, use the specified code
number.
Read Direct Reading Titrator Instruction Manual before proceeding. The
Titrator is calibrated in parts per million (ppm) Chloride. Each minor
division equals 4 ppm.
PRO CE DURE
1.
Fill test tube (0778) to 15 mL line with sample water.
2. Add one drop of *Phenolphthalein Indicator, 1% (2246). If solution
remains colorless, proceed to Step 3. If solution turns a pink color,
add *Sulfuric Acid, 0.5N (6090) one drop at a time, mixing after
each drop, until pink color disappears.
3. Add three drops of *Chloride Reagent #1 (4504). Cap and swirl to
mix. Solution will turn yellow.
4. Fill Direct Reading Titrator (0382) with *Chloride Reagent #2
(4505DR). Insert Titrator in center hole of test tube cap.
5. While gently swirling tube, slowly press plunger to add *Chloride
Reagent #2, one drop at a time, until yellow color changes to
orange-brown.
6. Read test result where plunger tip meets Titrator scale. Record as ppm
Chloride.
EXAMPLE:
Plunger tip is 3 minor division below line 100. Test
result is 100 plus (3 division x 4) equals 112 ppm.
7. If plunger tip reaches bottom line on Titrator scale (200 ppm) before
endpoint color change occurs, refill Titrator and continue titration.
When recording test result, be sure to include the original amount of
reagent dispensed (200 ppm).
8. To convert to grains per gallon, multiply by 0.058. Record as gpg
Chloride.
gpg Chloride = ppm Chloride x 0.058
HIGH CHLO RIDE & SA LIN ITY READ INGS
For high chloride and salinity readings the sample must be diluted to bring
it within a practicable range for titration. Dilutions of 1 to 20 or 1 to 100
are recommended. For example: 1 mL of sample water is diluted to a total
of 20 mL with distilled water. This is a 1 to 20 dilution. Fill the Titrator to
the 15 mL line with the diluted sample. Proceed with Steps 2 -7 above.
Multiply result by conversion factor below:
1 - 20 DILUTION
ppm Chloride = Titrator Reading x 20
ppt Chloride = Titrator Reading x 0.02
% Chloride = Titrator Reading x 0.002
1 - 100 DILUTION
ppm Chloride = Titrator Reading x 100
ppt Chloride = Titrator Reading x 0.1
% Chloride = Titrator Reading x 0.01
To convert parts per thousand (ppt) Chloride to parts per thousand (ppt)
Salinity use the following formula:
ppt Salinity = (1.805 x ppt Chloride) + 0.03
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Challenges SM
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side USA) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
10/01
L Mott