Thermo Scientific Orion® AQUAfast® Chlorine Meter Kit. Chlorine meter kit is quick and easy free and total chlorine testing for EPA reporting over the range of 0 to 2 mg/L. Meter can measure up to 4.0mg/L level with the same reagents, the expanded range for free and total chlorine measurements gives you a real number if you are out of the EPA measurement range to quickly recover your process. Uses EPA approved AC4P71 free chlorine and AC4P72 total chlorine methods for drinking water and wastewater reporting. Easy to use meter with large display. Accurate, reproducible results. Meter also contains calibration curves for AC2099 chlorine dioxide, AC3001 pH and AC2098 cyanuric acid (reagents sold separately). IP67 waterproof certified by TUV test. Customized crystal display with icons. Includes meter, AC4P71 free chlorine powder (100/pack), AC4P72 total chlorine powder (100/pack), 4 sample vials, tablet tamping stir rod, brush, user guide in case. Measurement method: Photometric. Light source: Light emitting diode. Wavelength: 525 nm. Detector: Silicon photodiode. Absorbance range: 0 to 2.5 Abs. Sample size: 0.33 oz. Operating and sample temperature range: 0 to 50°C. Operating humidity range: 0 to 90% relative humidity, non condensing at 30°C. Power supply: 4 AAA alkaline batteries. Battery life: >3000 tests. Dimensions: 25 x 15 x 34 cm. Per each. Thermo Scientific Orion® #: AQ3070.