| Range | | Free Chlorine: 0.00 to 5.00 mg/L (ppm); Total Chlorine: 0.00 to 5.00 mg/L(ppm); Total Hardness: 0.00 to 2.00 mg/L (ppm);Iron: 0.00 to 1.60 mg/L (ppm); pH: 6.5 to 8.5 pH |
| Resolution | | Chlorine: 0.01 mg/L (ppm); Total Hardness: 0.01 mg/L (ppm);Iron: 0.02 mg/L (ppm); pH: 0.1 pH |
| Precision | | Chlorine: ±0.03 mg/L (ppm) ±3% of reading; Total Hardness: ±0.11 mg/L (ppm)±5% of reading; Iron: ±0.01 mg/L (ppm) ±8% of reading; pH: ±0.1 pH |
| 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 measuring mode;after 1 hour of non-use in calibration mode |
| Dimensions | | 192 x 102 x 67 mm (7.6 x 4 x 2.6?) |
| Weight | | 290 g (10 oz.) |
| Method | | Chlorine: Adaptation of the EPA 330.5 Method, DPD; Total Hardness: Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th ed. Calmagite/colorimetric method; Iron:Adaptation of TPTZ method; pH: Phenol red method |