28
10 mL
SPECIFICATIONS
Range 0.00 to 5.00 mg/L
Resolution 0.01 mg/L from 0.00 to 2.50 mg/L;
0.10 mg/L above 2.50 mg/L
Precision ±0.03 mg/L @ 1.00 mg/L
Typical EMC ±0.01 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter
@ 525 nm
Method Adaptation of the USEPA method 330.5 and
Standard Methods for the Examination of Water
and Wastewater, 20
th
edition, 4500-Cl G. The
reaction between free chlorine and the DPD reagent
causes a pink tint in the sample.
REQUIRED REAGENTS
Code Description Quantity/test
HI 93701-0 DPD Powder Reagent 1 packet
REAGENT SETS
HI 93701-01 Reagents for 100 tests
HI 93701-03 Reagents for 300 tests
For other accessories see page 49.
MEASUREMENT PROCEDURE
• Select the program number corresponding to Free Chlorine on the
secondary LCD by pressing PROGRAM ▼ and ▲.
• Fill the cuvet with 10 mL of unreacted
sample, up to the mark, and replace
the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and “SIP” will blink on the display.
FREE CHLORINE
Free Chlorine
