DPD CHLO RINE TEST KIT
L
Mott
L
Mott
MODEL LP-1-NMC •CODE 6901-NMC
QUANTITY CONTENTS CODE
50 *Chlorine DPD #1R Tablets (*6999A) FMC6905A-
6999ABOX
50 Chlorine DPD #3R Tablets (*6905A)
50 *Chlorine DPD #2R Tablets (6904A) FMC6904A-
6906ABOX
50 *Chlorine DPD #4 Instrument Grade Tablets
(*6906A)
3 Test Tubes, plastic, w/caps 0106
1 Chlorine DPD Comparator, 0.1-1.0 ppm 6978
*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 see MSDS CD or 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
FREE AVAILABLE CHLORINE
1. Rinse the test tube (0106) with sample water. Fill to 10 mL line with
sample water.
2. Add one *Chlorine DPD #1R Tablet (6999A). Cap and mix until
tablet disintegrates.
3. Immediately insert test tube into Chlorine DPD Comparator (6978).
Match sample color to a color standard. Record as Reading #1. Do
not discard this sample if testing for Monochloramine, Dichloramine
or Total Residual Chlorine.
NOTE: Reading should be made within one minute of adding
reagent.
Reading #1 = ppm Free Available Chlorine
MONOCHLORAMINE
4. Add one Chlorine DPD #2R Tablet (6904A) to sample from Step 3.
Cap and mix until tablet disintegrates.
5. Insert test tube into Chlorine DPD Comparator (6978). Match
sample color to a color standard. Record as Reading #2.
Reading #2 - Reading #1 = ppm Monochloramine
DICHLORAMINE AND TOTAL RESIDUAL CHLORINE
6. Add one *Chlorine DPD #3R Tablet (6905A) to sample from Step 5.
Cap and mix until tablet disintegrates.
7. Insert test tube into Chlorine DPD Comparator (6978). Match
sample color to a color standard. Record as Reading #3.
Reading #3 - Reading #2 = ppm Dichloramine
Reading #3 = ppm Total Residual Chlorine
TOTAL RESIDUAL CHLORINE AND COMBINED CHLORINE
1. Rinse test tube (0106) with sample water. Fill to 10 mL line with
sample water.
2. Add one *Chlorine DPD #1R Tablet (6999A). Cap and mix until
tablet disintegrates.
3. Immediately insert test tube into Chlorine DPD Comparator (6978).
Match sample color to a color standard. Record as ppm Free
Available Chlorine.
4. Add one *Chlorine DPD #3R Tablet (6905A). Cap and mix until
tablet disintegrates.
5. Insert test tube into Chlorine DPD Comparator (6978). Match
sample color to a color standard. Record as ppm Total Residual
Chlorine.
Combined Chlorine, ppm =
Total Residual Chlorine - Free Available Chlorine
TOTAL RESIDUAL CHLORINE
*Chlorine DPD #4 Tablet determines Total Residual Chlorine and is used
where a differentiation in the type of chlorine is not required.
1. Rinse test tube (0106) with sample water. Fill to 10 mL line with
sample water.
2. Add one *Chlorine DPD #4 Instrument Grade Tablet (6906A). Cap
and mix until tablet disintegrates.
3. Insert test tube into Chlorine DPD Comparator (6978). Match
sample color to a color standard. Record as ppm Total Residual
Chlorine.
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Chal lenges
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
®
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