See page10.166 for Checker HC accessories HI719 Ð HI720 Magnesium and Calcium Hardness Handheld Colorimeters • 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 and HI720 are a simple, accurate, and cost eective way to measure magnesium and calcium hardness respectively. 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. Specifications HI719 (Magnesium Hardness) HI720 (Calcium Hardness) Range 0.00 to 2.00 ppm (as CaCO²) 0.00 to 2.70 ppm (as CaCO²) Resolution 0.01 ppm 0.01 ppm Accuracy ±0.20 ppm ±5% of reading @ 25 °C (77 °F) ±0.20 ppm ±5% of reading @ 25 °C (77 °F) Light Source Light Emitting Diode @ 525 nm Light Detector Silicon photocell Method 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. 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 Environment 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing Battery Type 1.5V AAA Alkaline Auto-off After 10 minutes of non-use Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”) Weight 64 g (2.3 oz) Ordering Information HI719 Checker®HC is supplied with sample cuvette and cap (2 pcs.), Magnesium Hardness reagent starter kit (reagents for 50 tests), 100 mL plastic beaker (1 pc.), 1 mL syringe with tips (2 pcs.), 1.5V AAA Alkaline battery (1 pc.), and instruction manual. HI720 Checker®HC is supplied with sample cuvette and cap (2 pcs.), Calcium Hardness reagent starter kit (reagents for 50 tests), 100 mL plastic beaker (1 pc.), 1 mL syringe with tip (2 pcs.), 1.5V AAA Alkaline battery (1 pc.), and instruction manual. Reagent Set HI719-25 Reagents for 50 Magnesium Hardness tests HI720-25 Reagents for 50 Calcium Hardness tests Calibration Set HI719-11 Magnesium Hardness certified standard kit HI720-11 Calcium Hardness certified standard kit | www.hannainst.com 10 10.152 Photometers Checker®HC
RkJQdWJsaXNoZXIy MTI3NTM=