User Guide

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HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine
HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine
HI 93710 - pH & Chlorine
The HI 93710 meter measures both pH and chlorine (Cl
2
, free and
total) content in water and wastewater in the following ranges:
pH 5.9 to 8.5 pH units
Free Chlorine 0.00 to 2.50 mg/L (ppm)
Total Chlorine 0.00 to 3.50 mg/L (ppm).
SPECIFICATIONS
Range pH 5.9 to 8.5
Free Cl
2
0.00 to 2.50 mg/L
Total Cl
2
0.00 to 3.50 mg/L
Resolution 0.1 pH/0.01 mg/L Cl
2
Accuracy ±0.1 pH
±0.03 mg/L ±3% of Cl
2
reading
Typical EMC ±0.2 pH
Deviation ±0.02 mg/L Cl
2
Light Source Light Emitting Diode @ 555 nm
Method Adaptation of the EPA recommended DPD method
330.5 for chlorine analysis. The reaction with
reagents causes a pink tint in the sample.
For pH, Phenol red method. The reaction with
reagents causes a red tint in the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93701-0 Free Cl
2
DPD 1 packet
HI 93710
pH/Chlorine
46
pp
pp
p
H MEASUREMENTH MEASUREMENT
H MEASUREMENTH MEASUREMENT
H MEASUREMENT
• Fill the cuvet up to the mark with 10 mL of
unreacted sample 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 appear on the display.
• Wait for a few seconds and the display will
show “-0.0-”. Now the meter is zeroed and
ready for measurement.
• Remove the cuvet and add 5
drops of the HI 93710 Phenol
Red Indicator. Replace the cap
and swirl the solution.
• Reinsert the cuvet into the instrument.
• Press the READ key and “SIP” will appear on the display during
measurement.
• The instrument directly displays the pH measured value on the
Liquid Crystal Display.
ZERO
pH
10 mL
x 5