⦁ Fluoride Range 0.0 to 20.0 mg/L (as F–) ⦁ Fluoride Resolution 0.1 mg/L ⦁ Fluoride Accuracy ±0.5 mg/L ±3% of reading ⦁ Fluoride Method Adaptation of Standard Methods for the Examination of Water and Wastewater, 23rd Edition, SPADNS Method ⦁ Photometer/Colorimeter Light Source Light Emitting Diode with 575 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 ⦁ Data Points Stored Last 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.) ⦁ Dimensions 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0″)