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Magnesium & Calcium Hardness

You are here : Home | Spares & Parts | Water Testing Equipment Water Testing Instruments | Single Parameter Checkers | Magnesium & Calcium


Single Parameter Check – Magnesium & Calcium

  • Handheld Magnesium CheckerColorimeters
  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience

Ideal for:

  • Water purification systems
  • Heating and cooling systems
  • Drinking water
  • Wastewater

The HI719 Checker®HC is a simple, accurate, and cost effective way to measure magnesium hardness. The HI720 Checker®HC is a simple, accurate, and cost effective way to measure calcium hardness.

The HI719 uses an adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, EDTA colorimetric method. The reaction between magnesium and reagents causes a reddish-violet tint in the sample.

The HI720 uses an 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.

CodeRangeDescriptionPrice
HI719 (Magnesium Hardness)0.00 to 2.00 ppmHI719 Checker®HC is supplied with sample cuvettes with caps (2), magnesium hardness reagent starter kit (reagents for 25 tests), syringes with tips (2), plastic beaker, battery, instructions and quick start guide.£60.00Buy Now
HI720 (Calcium Hardness)0.00 to 2.70 ppmHI720 Checker®HC is supplied with sample cuvettes with caps (2), calcium hardness reagent starter kit (reagents for 25 tests), syringes with tips (2), plastic beaker, battery, instructions and quick start guide.£60.00Buy Now

Specifications
HI719 (Magnesium Hardness)IHI720 (Calcium Hardness)
Range0.00 to 2.00 ppm0.00 to 2.70 ppm
Resolution0.01 ppm0.01 ppm
Accuracy @ 25°C/77°F± 0.20 ppm ± 5% of reading± 0.20 ppm ± 5% of reading
Light SourceLED @ 525 nm
Light Detectorsilicon photocell
Environment0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type(1) 1.5V AAA
Auto-offafter ten minutes of non-use
Dimensions81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight64 g (2.25 oz.)
Methodadaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, EDTA colorimetric method. The reaction between magnesium and reagents causes a reddish-violet tint in the sampleadaptation 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

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