• HI784 Marine Ammonia Checker HC
  • HI784 Marine Ammonia Checker HC
Hanna Instruments

HI784 Marine Ammonia Checker HC

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Our Marine Ammonia Checker HC (HI784) is designed to accurately and quickly determine the ammonia level in marine (saltwater) samples. The digital readout makes measurements effortless.

  • Range: 0.00 to 2.50 ppm (mg/L) NH3
  • Built-in timer so you don't miss a step
  • Saltwater Compatible
Our Ammonia Checker HC (HI784)  provides an uncomplicated, highly accurate, and budget-friendly way to measure ammonia (NH3/NH4+) in saltwater/marine environments.

Ammonia is naturally found as part of the nitrogen cycle of a tank as aquarium organisms produce it as waste. In a balanced tank, the majority of ammonia is consumed by bacteria and the nitrogen cycle continues. When out of balance, ammonia toxicity can wreak havoc on tank inhabitants. It is important to monitor ammonia levels to ensure they remain steady and low. The ammonia checker is designed as an exceptionally accurate alternative to chemical test kits, our Marine Ammonia Checker (HI784) provides quick, accurate results in a few easy steps.

Features at-a-glance

  • Simple and accurate digital test for small, trace amounts of ammonia
  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for: Saltwater Aquariums, Marine, and Aquaculture Applications
Specification Name Detail
Range 0.00 to 2.50 ppm (mg/L) NH3
Resolution 0.01ppm
Accuracy @ 25°C/77°F ±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.
Battery Type 1.5V AAA Alkaline
Auto-off After 20 minutes of non-use and 10 minutes after reading
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)*.
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 Each HI784 is delivered in a case with custom insert and 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 (25 tests)
Calibration Set HI784-11
Warranty 1 year