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HI 93741
Total Hardness & Iron LR
The HI 93741 meter measures the Iron (Fe) content and the Magne-
sium (Mg), Calcium (Ca) and Total Hardness in water and wastewater.
SPECIFICATIONS
Range Fe 0 to 400 µg/L
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 Fe 1 µg/L
Hardness 0.01 mg/L
Accuracy Fe ±10 µg/L ±8% of reading
Hardness ±0.11 mg/L ±5% of reading
Typical EMC Fe ±1 µg/L
Deviation Hardness ±0.02 mg/L
Light Source Light Emitting Diode @ 555 nm
Method For Iron, Adaptation of the TPTZ Method. The
reaction between iron and the reagent causes a
blue tint in the sample.
For Hardness, adaptation of the Standard Meth-
ods 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.
HI 93741HI 93741
HI 93741HI 93741
HI 93741
Total Hardness & Iron Low RangeTotal Hardness & Iron Low Range
Total Hardness & Iron Low RangeTotal Hardness & Iron Low Range
Total Hardness & Iron Low Range
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