LaMotte FAS-DPD & pH TEST KIT - Manual (Page 2)

Bro mine
1.
Multiply Free Available Chlorine results by 2.25.
To tal Chlo rine
ONE DROP =0.2 ppm or 0.5 ppm
5.
To determine total chlorine, add one *Chlorine DPD
#3R Tablet (6905A) to the solution from Step 4. Cap
and mix until tablet disintegrates. The reappearance
of a red color indicates combined chlorine.
6. Continue adding Chlorine/Bromine Titrant until the
red color again disappears.
7. Multiply the total number of drops used in Step 3
plus Step 6 by 0.2 if measured in 0.2 ppm or 0.5 if
measured in 0.5 ppm. Record as ppm Total
Residual Chlorine.
8. Subtract Free Available Chlorine from Total Residual
Chlorine. Record as ppm Combined Chlorine.
pH
1.
Fill tube (0106) to 5mL line with sample
water.
2. Add 5 drops of *pH Indicator (P-7026). Cap
tube and invert to mix.
3. Insert tube into top of Octa-Slide Viewer.
Slide pH Octa-Slide into side slot.
4. Read test result from Octa-Slide in pH units.
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Helping Peo ple Solve An a lyt i cal Chal lenges SM
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax 410-778-6394
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7514-pH-6/09