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HI 93725
pH & Total Hardness
HI 93725 - pH & Total HardnessHI 93725 - pH & Total Hardness
HI 93725 - pH & Total HardnessHI 93725 - pH & Total Hardness
HI 93725 - pH & Total Hardness
The HI 93725 meter measures pH and Magnesium/Calcium and Total
Hardness content in water and wastewater.
SPECIFICATIONS
Range pH 5.9 to 8.5
Mg Hardness 0.00 to 2.00 mg/L
Ca Hardness 0.00 to 2.70 mg/L
Total Hardness 0.00 to 4.70 mg/L
Resolution pH 0.1
Hardness 0.01 mg/L
Accuracy pH ±0.1
Hardness ±0.11 mg/L ±5% of reading)
Typical EMC pH ±0.1
Deviation Hardness ±0.02 mg/L
Light Source Light Emitting Diode @ 555 nm
Method For pH, Phenol red method. The reaction with
reagent causes a red tint in the sample.
For total hardness, adaptation of the Standard
Methods for the Examination of Water and
Wastewater, 18
th
edition, Calmagite/colorimet-
ric method. The reaction between hardness and
reagents causes a maroon tint in the sample.
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