LaMotte CHLORINE pH KIT OCTA-SLIDE 2 - Manual (Page 2)

PROCEDURE 1: FREE AVAILABLE CHLORINE,
MONOCHLORAMINE, DICHLORAMINE & TOTAL RESIDUAL
CHLORINE
FREE AVAILABLE CHLORINE
1. Rinse the test tube (0106) with sample water. Fill to the 5 mL line with sample
water.
2. Add one *Chlorine DPD #1R Tablet (6999A). Cap the test tube and mix until
tablet disintegrates.
3. Insert the Chlorine Octa-Slide 2 Bar 0.1-1.0 ppm (3405-01) or Chlorine Octa-
Slide 2 Bar 1.0-6.0 ppm (3404-01) into the Octa-Slide 2 Viewer (1101).
4. Immediately insert the tube into the Octa Slide 2 Viewer (1101). 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.
5. Retain this test sample for the Monochloramine Determination.
MONOCHLORAMINE
6. To the test sample from Step 5 above, add one Chlorine DPD #2R Tablet (6904A).
Cap the test tube and mix until tablet disintegrates.
7. Insert the Chlorine Octa-Slide 2 Bar 0.1-1.0 ppm (3405-01) or Chlorine Octa-
Slide 2 Bar 1.0-6.0 ppm (3404-01) into the Octa-Slide 2 Viewer (1101). Record
as Reading B. Any increase in color over Reading A is due to Monochloramine.
8. Immediately insert the tube into the Octa Slide 2 Viewer (1101). 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)
9. Retain this test sample for the Dichloramine determination.
DICHLORAMINE & TOTAL RESIDUAL CHLORINE
10. To the test sample from Step 9 above, add one *Chlorine DPD #3R Tablet
(6905A). Cap the test tube and mix until tablet disintegrates.
11. Insert the Chlorine Octa-Slide 2 Bar 0.1-1.0 ppm (3405-01) or Chlorine Octa-
Slide 2 Bar 1.0-6.0 ppm (3404-01) into the Octa-Slide 2 Viewer (1101).
12. Immediately insert the tube into the Octa Slide 2 Viewer (1101). 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)
13. Reading C also represents the Total Residual Chlorine content.