HI758 Marine Calcium Handheld Colorimeter • Easier to use and more accurate than chemical test kits · Zincon method adaptation · ±6 % of reading · 1 ppm resolution · Large, easy-to-read digits · Auto shut-off • Dedicated to a single parameter · Uses 10 mL glass cuvettes • Small size, big convenience · Weighing a mere 64 g (2.25 oz.), the Checker®HC easily fits into the palm of your hand or pocket · Quick and accurate on-the-spot analysis · Single-button operation: zero and measure · Operated by a single 1.5V AAA battery • Ideal for: · Aquaculture · Aquariums Calcium present in water supplies results from passage over deposits of limestone, dolomite, gypsum, and gypsiferous shale. The concentration may extend from 0 to several hundred milligrams per liter, depending on its source and treatment. Calcium is necessary in plant and animal nutrition since it is an essential constituent of bones, shells and plant structures. Calcium in water as carbonate is one of the primary components of water hardness which can cause pipe or tube scaling. The HI758 Calcium Checker HC is extremely simple to use. First, zero with Reagent A and deionized water. Next, remove the vial and add sample and Reagent B and shake to dissolve. Reinsert into the Checker HC and press the button to read the calcium concentration in ppm on the display. HI731339P volumetric pipette is designed to measure and transfer exactly 100 µL of solution to a cuvette. To obtain the highest accuracy and precision from the HI758 it is necessary to add exactly 100 µL of aquarium saltwater to the cuvette. Any variation will result in an inaccurate reading. Specifications HI758 Range 200 to 600 ppm (as Ca» + ) Resolution 1 ppm Accuracy @25°C (77°F) ±6 ppm ±5% of reading @ 25 °C (77 °F) Light Source Light Emitting Diode @ 610 nm Light Detector Silicon photocell Method Adaptation of the Zincon Method 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 and 2 minutes after reading 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 HI758 Checker®HC is supplied with Sample cuvette and cap (2 pcs.), Marine Calcium reagent starter kit (reagents for 25 tests, 1 mL syringe with tip (1 pc.), Minipipette with tip (1 pc.), Plastic pipette (1 pc.), 1.5V AAA Alkaline battery (1 pc.), and instruction manual. Reagent Set HI758-26 Reagents for 25 Marine Calcium tests Calibration Set HI758-11 Marine Calcium certified standard kit Accessories HI731339P 0.1 mL minipipette HI731349P Tip for 0.1 mL minipipette (10 pcs.) HI758 includes HI731339P 100µL pipette and 1 mL syringe See page10.166 for Checker HC accessories www.hannainst.com | 10 10.141 Photometers Checker®HC
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