HI784 Marine Ammonia Handheld Colorimeter • Easier to use and more accurate than chemical test kits • Dedicated to a single parameter • 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: · Aquariums · Marine biology Ammonia is a by-product of the Nitrogen cycle. Ammonia is normally removed by nitrifying bacteria, but ammonia levels can rise if there is an imbalance in the tank water chemistry. Excessive ammonia in a marine aquarium increases the risk of inhabitant illness or death. The HI784 Marine Ammonia Checker®HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of ammonia colorimetrically. The HI784 is designed speci¡cally to measure ammonia levels in a saltwater aquarium. The 0.00 to 2.50 ppm range is ideal for coral/¡sh or ¡sh-only aquarium maintenance. Specifications HI784 Range 0.00 to 2.50 ppm (mg/L) NH² Resolution 0.01 ppm (mg/L) Accuracy ±0.05 ppm ±5% of reading @ 25 °C (77 °F) Light Source Light Emitting Diode @ 610 nm Light Detector Silicon photocell Method Adaptation of the Salicylate Method. The reaction between Ammonia and Ammonium and the reagent causes a blue-green tint in the sample. Environment 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing Prepared sample cuvette (sample plus reagents) must be 18 to 29 °C (65 to 85 °F)*. Battery Type 1.5V AAA Alkaline Auto shut-off After 20 minutes of non-use and 10 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 HI784 Checker®HC is supplied with Marine Ammonia reagent starter kit (reagents for 10 tests), sample cuvette and cap (2 pcs.), plastic refilling pipette (1 pc.), 1.5V AAA alkaline battery (1 pc.), instruction manual, and quick-reference guide. Reagent Set HI784-25 Reagents for 25 Marine Ammonia tests Calibration Set HI784-11 Marine Ammonia certified standard kit * Warm or cool prepared cuvettes if needed. | www.hannainst.com 10 10.138 Photometers Checker®HC
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