| Range | | 0.0 to 30.0 mg/L (ppm) (NO-3-N) |
| Resolution | | 0.1 mg/L (ppm) |
| Precision | | ±0.5 mg/L ±10% of reading |
| Light Source | | Tungsten lamp |
| Light Detector | | Silicon photocell with narrow band interferencefilter @ 525 nm |
| Environment | | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Power Supply | | (1) 9V battery |
| Auto-off | | After 10 minutes of non-use in measurement mode;after 1 hour of non-use in calibration mode; with lastreading reminder. |
| Dimensions | | 192 x 102 x 67 mm (7.6 x 4 x 2.6?) |
| Weight | | 290 g (10 oz.) |
| Method | | Adaptation of the cadmium reduction method. |