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Nitrates reduce to Nitrites which in turn easily combine to form substances dangerous to man. A maximum level of 45mg/L is established as a worldwide guideline for nitrate concentration in water.
The Hanna HI-93728 Nitrate Low Range Meter is extremely easy to use and gives direct readout on the digital display in mg/L(ppm). To obtain a reading simply take a small sample of water in the glass cuvette supplied, add the reagent (not included), and then place the cuvette in the measuring chamber of the instrument.
With a normal 9V battery you will be able to get more than 300 measurements. The auto shut-off feature (after 10 minutes of non-use) guarantees a long battery life.
| Instruction Manual |
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| Range |
0.0 to 30.0 mg/L (NO-³-N) |
| Resolution |
0.1 mg/L |
| Accuracy |
±0.5 mg/L ±10% of reading |
| Light Source |
LED 555 nm |
| Light Life |
Life of the instrument |
| Light Detection |
Silicon Photocell |
| Battery Type / Life |
1 x 9V / approx. 40 hours of continuous use;
auto-off after 10 minutes of non use |
| Environment |
0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Dimensions |
180 x 83 x 46 mm (7.1 x 3.3 x 1.8") |
| Weight |
290 g (10 oz.) |
| Method |
Adaptation of cadmium reaction method. The reaction between
nitrate-nitrogen and the reagent causes an amber tint in the sample |
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