Nitrates are present in nature as a result of decomposition of organic microorganisms or due to their use as fertilizers. Nitrates reduce to nitrites, which in turn easily combine to form substances dangerous to man.
A maximum level of 45 mg/L (ppm) is established as a worldwide guideline for nitrate concentration in water. In Europe, the maximum consented level of nitrates in potable water is 50.0 mg/L (ppm), while in the USA the EPA has established a guideline for the maximum level of nitrate—nitrogen of 10 mg/L (NO-3-N), which corresponds to 45.0 mg/L of nitrates.
The HI 96786 meter measures the nitrate content in water and wastewater.
This meter uses an exclusive positive-locking system to ensure that the cuvette is in the same place every time it is placed into the measurement cell.
Order Information:
HI 96786 are supplied with sample cuvettes with caps (2), 9V battery and instruction manual.
HI 9786C include photometer, sample cuvettes with caps (2 ea.), 9V battery, scissors, cloth for wiping cuvettes, instrument quality certificate, instruction manual and rigid carrying case.
Specifications
| Range | 0.0 to 100 mg/L (ppm) nitrate |
| Resolution | 1 mg/L |
| Accuracy @ 25°C | ±5 mg/L ±5% of reading |
| Light Source | tungsten lamp |
| Light Detector | silicon photocell with narrow band interference filter @ 525 nm |
| Power Supply | 9V battery |
| Auto-off | after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Dimensions | 193 x 104 x 69 mm (7.6 x 4.1 x 2.7') |
| Weight | 360 g (12.7 oz.) |
| Method | adaptation of cadmium reaction method |
| Notes | Chloride above 100 mg/L will cause a negative interference with the nitrate chemistry. We do not recommend the HI96786 for measuring nitrate in saltwater. |
| Warranty | 2 years |
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