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.
Total Chlorine (T)
*Scan Blank
16:02:19 01/04/05
7. Removethetubefromthemeter.
Pour off all but a sufficient amount
of sample water to cover a tablet.
Add one *Chlorine DPD #1
Instrument Grade Tablet (6903).
Crush tablet with a tablet crusher
(0175), then add sample water
until the tube is filled to the 10 mL
line. Cap tube and shake until
tablet has dissolved.
8. Add one *Chlorine DPD #3
Instrument Grade Tablet (6197).
Crush tablet with Tablet Crusher
(0175). Cap tube and shake until
the tablet dissolves.
Note: For wastewater samples, Standard Methods for the Examination of W ater and
Wastewater recommends waiting 2 minutes for full color development.
9. Open the meter lid. Insert sample
into chamber. Align the index notch
on the positioning ring with the index
arrow on the meter. Close lid, select
*IOK to select Scan Sample.
Total Chlorine (T)
* Scan Sample
16:02:19 01/04/05
10. Record the result as Total Chlorine. Total Chlorine (T)
1.00 ppm
* Scan Sample
16:02:19 01/04/05
CALIBRATION & ANALYSIS • CHLORINE 53
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