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Marine Ammonia Checker HC Handheld Colorimeter – HI784

73.50  + PVM

The HI784 Checker HC provides a simple, accurate and cost – effective way to measure marine ammonia in aquarium and aquaculture applications.

SKU: HI784 Category: Tag:

Available on backorder - This item may take 2-3 weeks to deliver.

The HI784 Marine Ammonia Checker HC is a handheld colorimeter that uses the BeerLambert principle to determine the concentration of ammonia colorimetrically. The HI784 is designed specifically to measure ammonia levels in a saltwater aquarium. The 0.00 to 2.50 ppm range is ideal for coral/fish or fish-only aquarium maintenance. 

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.

• Ideal for aquariums and marine biology
• Easier to use and more accurate than chemical test kits
• Small size, big convenience



Range   0.00 to 2.50 ppm (mg/L) NH3
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-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:

HI784 Checker HC is supplied with sample cuvette and cap (2 pcs.), Marine Ammonia reagent starter kit (reagents for 10 tests), plastic refilling pipette (1 pc.), 1.5V AAA alkaline battery (1 pc.), instruction manual, and quick-reference guide.


HI784-25 Reagents for 25 Marine Ammonia tests. Price: 20.00 €
HI784-11 Marine Ammonia certified standard kit. Price: 20.00 €

*HI784-11 and HI784-25 are sold separately.

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