4. Press *IOK to select Test Free
Chlorine.
Chlorine (L)
* Test Free
Test Total
16:02:19 01/04/05
5. Rinse a clean tube (0290) with the
sample water. Fill the tube to the
10 mL line with the sample water.
Dry the tube with a lint-free cloth.
Put on a dry positioning ring. Cap
the tube.
6. Open the meter lid. Insert the tube
into the chamber. Align the index
notch on the positioning ring with
the index arrow on the meter. Close
the lid and press *IOK to select
Scan Blank.
Free Chlorine (L)
* Scan Blank
16:02:19 01/04/05
7. Removethetubefromthemeter.
Add 5 drops of DPD 1A Free
Chlorine Reagent (P-6740) and
mix.
CALIBRATION & ANALYSIS • CHLORINE 55
DPD
1A
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