Hanna Instruments HI781 Marine Low Range Nitrate Checker HC
The HI781 is specifically made to gauge low nitrate concentrations in saltwater aquariums. The optimal range for saltwater, reef aquarium care is 0.00 to 5.00 ppm (mg/L). The Hanna Marine Nitrate Checker® employs a fixed wavelength LED and silicon photo detector, similar to professional apparatus that uses a light source, filter, and light sensing detector to deliver the precision of professional instruments at the cost-effective pricing of a chemical test kit.
- Compact, Portable Design
- Built-in Timer
- Saltwater Compatible
The nitrogen cycle produces nitrate as a byproduct. Nitrate levels that are too high in a reef aquarium can encourage the growth of undesired organisms like algae and dinoflagellates, while levels that are too low can cause hunger, which is characterized by the loss of color and pallor in SPS and other corals. The HI781 Nitrate Checker HC is a portable colorimeter that measures nitrate concentration colorimetrically using the Beer-Lambert principle. The HI781 is specifically made to gauge low nitrate concentrations in saltwater aquariums. For reef aquarium care, the 0.00 to 5.00 ppm (mg/L) range is ideal.
Designed as a more accurate alternative to chemical test kits, the HI781 provides quick, accurate results in four easy steps:
Features
- More accurate and easier to use than chemical test kits
- Small size, big convenience
- Ideal for aquariums and marine biology
- Dedicated to a single parameter
HI782 High Range Nitrate Checker vs HI781 Low Range Nitrate Checker
For aquarists with higher-than-average nutrient levels, the HI782 was developed to swiftly and easily monitor nitrate levels. This includes saltwater aquariums that only contain fish or corals that can withstand excessive nitrate levels of 30 ppm or higher. Many saltwater reef aquariums require very low nitrate levels because nitrate can harm and even kill some sensitive corals and animals. This is why the HI781 offers unparalleled precision in the assessment of extremely low nitrate levels (0.00 to 5.00 ppm). Hanna Instruments advises using the HI97728 Nitrate Portable Photometer for freshwater samples.
| SKU | HI781 |
|---|---|
| Product Name | Marine Low Range Nitrate Checker HC – HI781 |
| Quote Required | Yes |
| Nitrate Range | 0.00 to 5.00 ppm (as NO3–) |
| Nitrate Resolution | 0.01 ppm |
| Nitrate Accuracy | ±0.25 ppm ±2% of reading @ 25 °C (77 °F) |
| Nitrate Method | Colorimetric method. The reaction between nitrate and the reagent causes a pink/violet tint in the sample. This checker has been developed to work with seawater samples. |
| Photometer/Colorimeter Light Source | Light Emitting Diode @ 525 nm |
| Photometer/Colorimeter Light Detector | Silicon photocell |
| Battery Type/Life | 1.5V AAA Alkaline |
| Automatic Shut-Off | After 10 minutes of non-use |
| Environment | 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing |
| Weight | 64 g (2.3 oz) |
| Dimensions | 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”) |
| Ordering Information | HI781 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. |
| Notes | Nitrite and Copper present will interfere with the measurement. |
