- Hanna HI96728 Nitrate Nitrogen Portable Photometer
- Nitrate Range 0.0 to 30.0 mg/L (ppm) NO₃-N (nitrate-nitrogen)
- Nitrate Resolution 0.1 mg/L (ppm)
- Photometer/Colorimeter Light Detector silicon photocell with narrow band interference filter @ 525 nm
- Battery Type/Life 9V battery
- Automatic Shut-Off after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder
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