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DEHA TEST KIT
L
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CODE 4790
QUANTITY CONTENTS CODE
15 mL *DEHA Reagent 1 *4791-E
15 mL *DEHA Reagent 2 *4792-E
15 mL *DEHA Reagent 3 *4793-E
2 Test Tubes 2.5-5-10 mL, plastic, w/caps 0106
1 Octa-Slide Viewer 1100
1 DEHA Octa-Slide Bar, 0.05-1.5 ppm 3442
*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 OCTA-SLIDE VIEWER
The Octa-Slide Viewer should be
held so non-direct light enters
through the back of the viewer. With
the sample tube inserted at top, slide
the Octa-Slide bar through the viewer
and match with a color standard.
TESTING HINTS
1. The test should be performed at normal room temperature
(20-25°C).
2. Reacted samples should not be exposed to sunlight. They can be
stored in the test kit box during the 10 minute wait.
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3. Thoroughly clean tubes immediately after each test to avoid
staining and future contamination.
4. Ferrous ions, Fe+2, will give a false positive. The contribution of Fe
to reading can be determined by testing a second sample and
skipping Step 4. This result should be subtracted from previous
result.
PRO CE DURE
1. Fill test tube (0106) to the 5 mL line with sample water.
2. Add 3 drops of *DEHA Reagent 1 (4791) and 3 drops of *DEHA
Reagent 2 (4792).
3. Cap and mix.
4. Add 3 drops of *DEHA Reagent 3 (4793). Cap and mix.
NOTE: If the alkalinity of the sample is over 300 ppm, use the
following number of drops of *DEHA Reagent 3:
Alkalinity, ppm
Drops of
*DEHA Reagent 3
300-399 4
400-499 5
500-599 6
600-699 7
700-799 8
800-899 9
900-999 10
5. Wait exactly 10 minutes.
6. Immediately insert test tube into top of Octa-Slide Viewer (1100).
Slide DEHA Octa-Slide Bar (3442) into Octa-Slide Viewer. Match
sample color to a color standard. Record result as ppm DEHA.
NOTE: This test kit will also test for the oxygen scavenger erythorbic
acid (also called isoascorbic acid or araboascorbic acid). Follow the test
instruction and multiply the results by 4 to get ppm Erythorbic Acid.
DEHA x 4 = Erythorbic Acid
+2
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Challenges
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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