Hanna Instruments HI 93710 User Manual

Page 13

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

edition,

Calmagite/colorimet-

ric method. The reaction between hardness and

reagents causes a maroon tint in the sample.

HI 93741

Total Hardness & Iron Low Range

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