LaMotte AB-COS User Manual

CHLO RIDE TEST KIT

L

Mott

WARNING! This set contains chemicals

that may be harmful if misused. Read

cautions on individual containers

carefully. Not to be used by children

except under adult supervision

AUTOMATIC BURET METHOD

MODEL AB-COS · CODE 7249

QUANTITY CONTENTS CODE

30 mL *Chloride Reagent A *4069-G
2 x 230 mL *Chloride Reagent B *4070-K
15 mL *Phenolphthalein Indicator, 1% *2246-E
120 mL *Hydrogen Peroxide, 3% *6091-J
15 mL *Sulfuric Acid, 0.5N *6090-E
15 mL *Sodium Hydroxide, 0.5N *6089-E
1 Pipet, 1.0 mL, plastic 0354
1 Pipet, 0.5 mL, plastic 0353
1 Graduated Cylinder, 50 & 58.3 mL 0455
1 Flask, Erlenmeyer, 125 mL 0431
1 Automatic Buret Assembly 0427-28

*WARNING: Reagents marked with an * are considered to be potential
health hazards. To view or print a Material Safety Data Sheet (MSDS) for
these reagents go to www.lamotte.com. To obtain a printed copy, contact
LaMotte by e-mail, phone or fax.

To order individual reagents or test kit components, use the specified code
number.

Read the Automatic Buret Instruction Manual before proceeding.

The graduated cylinder (0455) furnished with this unit is marked at 50
and 58.3 mL. The equivalences for these sample sizes are as follows:

Sample Size Each mL of Chloride Reagent B Equals

50 mL 10 parts per million (ppm) chloride

58.3 mL 0.5 grains per gallon (gpg) chloride

PRO CE DURE

1. Use the graduated cylinder (0455) to measure the appropriate
amount (50 mL for ppm or 58.3 mL for gpg) of sample water.
Transfer to the Erlenmeyer flask (0431).

2. If no sulfite is present, proceed to Step 3. If sulfite is present, use

1.0 mL pipet (0354) to add 1.0 mL of *Hydrogen Peroxide, 3%
(6091).

3. Add 2 drops of *Phenolphthalein Indicator, 1% (2246). Solution
should turn red. If it does not, add *Sodium Hydroxide, 0.5N
(6089), one drop at a time, until a red color appears.

4. Add *Sulfuric Acid, 0.5N (6090), one drop at a time, until the red
color disappears.

5. Use the 0.5 mL pipet (0353) to add 0.5 mL of *Chloride Reagent
A (4069). Swirl to mix.

6. Fill the Automatic Buret (0427) with *Chloride Reagent B (4070).
While gently swirling the flask, titrate the sample with Chloride
Reagent B until the yellow color changes to orangish brown.
Record the buret reading.

7. Use the following equations to determine the chloride
concentration:

ppm Chloride = 10 x (Buret Reading – 0.2 mL)

gpg Chloride = 0.5 x (Buret Reading – 0.2 mL)

LaMOTTE COM PANY

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PO Box 329 • Chestertown • Maryland • 21620 • USA

800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax [phone]

Visit us on the web at www.lamotte.com

®

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