HI-781 MARINE NITRATE LOW RANGE CHECKER HC
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HI-781
The HI-781 Nitrate Checker HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of nitrate colorimetrically.
The HI-781 is designed specifically to measure low levels of nitrate in a saltwater aquarium. The 0.00 to 5.00 range is ideal for reef aquarium maintenance.
The Checker®HC handheld colorimeter is supplied with:
- Sample cuvette and cap (2)
- Marine Nitrate Low Range reagent starter kit (reagents for 25 tests)
- Filter paper (25)
- Filter holder (1)
- Mixing vial and cap (1)
- 5 mL syringe with tip (1)
- 10 mL syringe with tip (1)
- 1.5V AAA Alkaline battery (1)
- Instruction manual
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.
- Ideal for aquariums and marine biology
- Easier to use and more accurate than chemical test kits
- Small size, big convenience
Four steps. One click. Instant Readout.
1. ‘Zero’ the Checker®HC with your vial & 10ml water sample inside
2. Take the vial out and add your reagent
3. Place your vial into your Checker®HC
4. Press the button and read the results
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| 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 |
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