⦁ Anionic Surfactants Range 0.00 to 3.50 mg/L (as SDBS) ⦁ Anionic Surfactants Resolution 0.01 mg/L ⦁ Anionic Surfactants Accuracy ±0.04 mg/L ±3% of reading at 25°C ⦁ Anionic Surfactants Method adaptation of the US EPA Method 425.1 and Standard Methods for the Examination of Water & Wastewater, 20th Edition, 5540C, Anionic Surfactants as MBAS ⦁ Photometer/Colorimeter Light Source LED with 610 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) ⦁ 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 (IP67) ⦁ Weight 380 g (13.4 oz.) ⦁ Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)