LaMotte LP-8 User Manual

CHLO RINE - pH TEST KIT

Mott

MODEL LP-8 • CODE 6980

QUANTITY CONTENTS CODE

200 *Chlorine DPD #1R Tablets *6999A-J 100 Chlorine DPD #2R Tablets 6904A-J 200 *Chlorine DPD #3R Tablets *6905A-J 100 *Chlorine DPD #4R Tablets *6899A-J 200 Phenol Red Tablets 6915A-J 1 Tablet Crusher, plastic 0175 6 Test Tubes, 5 & 10 mL, glass, w/caps 0898 1 Chlorine DPD Comparator, 0.1 - 1.0 ppm 6978 1 Chlorine DPD Comparator, 1.0 - 6.0 ppm 6979 1 Phenol Red Comparator, pH 6.8 - 8.2 2185

*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.

USE OF THE OCTET COM PARA TOR

The Octet Comparator contains eight permanent color standards. A test sample is inserted into the openings in the top of the comparator. The sample can then be compared to four color standards at once, and the value read off the comparator. For optimum color comparison, the comparator should be positioned between the operator and a light source, so that the light enters through the special light-diffusing screen in the back of the comparator. Avoid viewing the comparator against direct sunlight or an irregularly lighted background.

PRO CE DURE 1: FREE AVAIL ABLE CHLO RINE, MONOCHLORAMINE, DICHLORAMINE & TO TAL RE SID UAL CHLO RINE

FREE AVAILABLE CHLORINE

1. Rinse the test tube (0898) with sample water. Fill to the bottom line with sample water.

2. Add one *Chlorine DPD #1R Tablet (6999A). Crush tablet with tablet crusher (0175). Cap the test tube and mix until tablet disintegrates.

3. Immediately insert the test tube into the Chlorine DPD Comparator,

0.1-1.0 ppm (6978) or the Chlorine DPD Comparator, 1.0-6.0 ppm (6979). Match sample color to a color standard. Color matching should be completed within one minute from the addition of the *Chlorine DPD #1R Tablet. This is the Free Available Chlorine concentration of the test sample. Record as Reading A.

4. Retain this test sample for the Monochloramine Determination.

MONOCHLORAMINE

5. To the test sample from Step 4 above, add one Chlorine DPD #2R Tablet (6904A). Crush tablet with tablet crusher (0175). Cap the test tube and mix until tablet disintegrates.

6. Insert the test tube into the Chlorine DPD Comparator, 0.1-1.0 ppm (6978) or the Chlorine DPD Comparator, 1.0-6.0 ppm (6979). Match sample color to a color standard. Record as Reading B. Any increase in color over Reading A is due to Monochloramine.

Reading B - Reading A = Monochloramine (ppm)

7. Retain this test sample for the Dichloramine determination.

DICHLORAMINE & TOTAL RESIDUAL CHLORINE

8. To the test sample from Step 7 above, add one *Chlorine DPD #3R Tablet (6905A). Crush tablet with tablet crusher (0175). Cap the test tube and mix until tablet disintegrates.

9. Insert the test tube into the Chlorine DPD Comparator, 0.1-1.0 ppm (6978) or the Chlorine DPD Comparator, 1.0-6.0 ppm (6979). Match sample color to a color standard. Record as Reading C. The increase in color over Reading B is due to Dichloramine.

Reading C - Reading B = Dichloramine (ppm)

10. Reading C also represents the Total Residual Chlorine content.

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