The Checker®HC handheld colorimeter is supplied with:
Nitrate is a by-product of the Nitrogen cycle. Excessive amounts of Nitrates in a reef aquarium can promote the growth of undesirable organisms including algae and dinoflagellates, while insufficient amounts can lead to starvation in which SPS, and other corals, will show signs including the loss of colour and paleness.
| Range | 0.00 to 5.00 ppm (mg/L) NO₃- | |
| Resolution | 0.01 ppm | |
| Accuracy @ 25°C/77°F | ±0.25 ppm ±2% of reading | |
| Light Source | LED @ 525 nm | |
| Light Detector | silicon photocell | |
| Method | zinc reduction method | |
| Auto-off | after ten minutes of non-use | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing | |
| Battery Type | (1) 1.5V AAA | |
| Ordering Information | HI-781 Checker HC is supplied with sample cuvettes with caps (2), nitrate reagent starter kit (reagents for 25 tests), filter holder, 10 mL syringe, 5 mL syringe with tip, mixing vial with cap, battery, and instructions. | |
| Accessories | HI-781-25 Reagent set for 25 tests HI-781-11 Calibration set |
