| Hardness, Total Range | Hardness LR: 0 to 250 mg/L; Hardness MR: 200 to 500 mg/L; Hardness HR: 400 to 750 mg/L (ppm) CaCO₃ |
|---|---|
| Hardness, Total Resolution | 1 mg/L from 0 to 100 mg/L, 5 mg/L from 100 to 750 mg/L (ppm) CaCO₃ |
| Hardness, Total Accuracy | Hardness LR: ±5 mg/L ±4% of reading; Hardness MR: ±7 mg/L ±3% of reading; Hardness HR: ±10 mg/L ±2% of reading |
| Hardness, Total Method | adaptation of the EPA recommended method 130.1 |
| Photometer/Colorimeter Light Source | light emitting diode |
|---|---|
| Photometer/Colorimeter Light Detector | silicon photocell with narrow band interference filter @ 466 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 |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
| Weight | 9V battery |
| Dimensions | 193 x 104 x 69 mm (7.6 x 4.1 x 2.7”) |
