Hanna Instruments HI720 Checker photometer for Calcium Hardness LR

HI720 Checker photometer for Calcium Hardness LR

€63,00 Incl. tax

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Article number: HI720
Availability: In stock (1)

The HI720 Checker photometer for Calcium Hardness LR is a digital pocket photometer for measuring the calcium hardness in water. To be used during field research near saltwater areas, but also in saltwater aquariums. Prevent phosphate formation in salt water thanks to the highly accurate HI736 Checker photometer for Phosphor ULR (Ultra Low Range)

  • Economic, fast and accurate measurements.
  • Very clear digitally readable display.
  • Very easy to use with just one control button.
  • Practically no maintenance.
  • Automatic shutdown after 2 minutes.


Measuring range

0 to 200 ppb


± 5% of the reading value


1 ppb

Light source

LED at 525 nm


adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, Calmagite method. The reaction between calcium and reagents causes a reddish-violet tint in the sample.


1 battery of 1.5 V type AAA

Measurements and weight

81.5 x 61 x 37.5 mm / 64 g

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