Hanna Ammonia Checker HI784
$67.99
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
Availability:
In stock
SKU
HAN784
Ammonia Checker Tips & Tricks for Accurate Measurements
- Ensure the sample does not contain any debris.
- Hold dropper bottles completely vertically and squeeze slowly to ensure correct drop size.
- Whenever the cuvette is placed into the checker, it must be dry outside and free of fingerprints, oil and dirt.
- Wipe the cuvette thoroughly with a microfiber cleaning cloth or a lint-free cloth prior to insertion.
- Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette.
- Do not let the reacted sample stand too long after reagent has been added, as accuracy will be affected.
- Discard the sample immediately after the reading has been taken or the glass might become permanently stained.
- Prepare sample cuvette immediately after collecting sample from tank. Ammonia is volatile and will dissipate if stored in a bottle before analysis, causing low measurements.
- If the prepared sample cuvette becomes cloudy the measurement will not be accurate.
- Prepare a new sample by adding an extra 1-2 drops of HI784A-0 Reagent.
| Specification Name | Detail |
|---|---|
| SKU | HI784 |
| 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 |
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