⦁ Color, Water Range 0 to 500 PCU ⦁ Color, Water Resolution 1 PCU ⦁ Color, Water Accuracy ±10 PCU ±5% of reading at 25 °C ⦁ Color, Water Method adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th Edition, Colorimetric Platinum Cobalt Method ⦁ Photometer/Colorimeter Light Source light emitting diode with narrow band interference filter @ 420 nm ⦁ Photometer/Colorimeter Light Detector silicon photocel ⦁ 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 Type automatically logged ⦁ Logging Memory 50 readings ⦁ Battery Type/Life 1.5 V AA Alkaline (3 pcs) / > 800 measurements (without backlight) ⦁ Automatic Shut-Off After 15 minutes of inactivity (30 minutes before a READ measurement) ⦁ Environment 0 to 50 °C (32 to 122 °F); ⦁ 0 to 100% RH, ⦁ Weight 380 g (13.4 oz.) without batteries ⦁ Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)