LaMotte CHLORINE TEST KIT DUAL RANGE SL-16 - Manual (Page 2)

EPA AC CEPTED PRO CE DURE
EPA accepted for NIPDWR monitoring.
For compliance monitoring a
Check Standard should be prepared.
CHECK STAN DARD PREP A RA TION: 1 ppm Equiv a lent So lu tion
1.
Dissolve 891 mg of potassium permanganate in 1000 mL of distilled
water in a volumetric flask (1000 ppm equivalent solution).
2. Dilute 1 mL of this solution to 1000 mL with distilled water in a
volumetric flask. This solution is equivalent to 1 ppm Free Available
Chlorine.
PRO CE DURE
FREE AVAIL ABLE CHLO RINE
1.
Fill a test tube (0106) to the 5 mL line with sample water.
2. Add one *Chlorine #1R Tablet (6999A). Cap and mix until tablet
disintegrates. A pink to red color indicates the presence of Chlorine.
3. Insert test tube into the top of the Octa-Slide Viewer (1100). Slide
the 0.1 to 1.0 ppm Chlorine Octa-Slide Bar (3405) into the
Octa-Slide Viewer. Match sample color to a color standard. Record as
ppm Free Available Chlorine.
4. If the sample is darker than the 1.0 standard, remove 0.1 to 1.0
Octa-Slide Bar, replace it with the 1.0 to 6.0 Octa-Slide Bar (3404).
Match sample color to a color standard. Record as ppm Free
Available Chlorine.
NOTE:
Save sample for Total Residual and Combined Chlorine
tests.
TO TAL RE SID UAL & COM BINED CHLO RINE
5.
Add one *Chlorine DPD #3R Tablet (6905A) to the sample from
Step 4. Cap tube and mix until tablet disintegrates.
6. Insert test tube into the Octa-Slide Viewer (1100). Match sample
color to a color standard. Record as ppm Total Residual Chlorine.
7. Subtract Free Available Chlorine from Total Residual Chlorine.
Record as ppm Combined Chlorine.
Combined Chlorine =
Total Residual Chlorine – Free Available Chlorine
NOTE: Thoroughly clean and rinse test tubes after each test.
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