⦁ Hardness, Total Range low range: 0 to 250 mg/L (as CaCO3) medium range: 200 to 500 mg/L (as CaCO3) high range: 400 to 750 mg/L (as CaCO3) ⦁ Hardness, Total Resolution 1 mg/L ⦁ Hardness, Total Accuracy low range: ±5 mg/L ±4% of reading at 25 °C medium range: ±7 mg/L ±3% of reading at 25 °C high range: ±10 mg/L ±2% of reading at 25 °C ⦁ Hardness, Total Method adaptation of the EPA Recommended Method 130.1 ⦁ Photometer/Colorimeter Light Source LED with 466 nm bandpass filter ⦁ Photometer/Colorimeter Light Detector silicon photocell ⦁ Bandpass Filter Bandwidth 8 nm ⦁ Bandpass Filter Wavelength Accuracy ±1.0 nm ⦁ Cuvette Type round 24.6 mm diameter (22 mm inside) ⦁ Function GLP ⦁ Display 128 x 64 pixel B/W LCD with backlight ⦁ Logging Memory 50 readings ⦁ Battery Type/Life 1.5 V AA Alkaline (3 pcs.) / > 800 measurements (without backlight) ⦁ Environment 0 to 50 °C (32 to 122 °F); max. 95% RH non-condensing ⦁ Weight 380 g (13.4 oz.) ⦁ Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)
