à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ Colorimeter Chlorine Meter > à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ ÍÔÊÃÐ Free Chlorine Meter HI95771C à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ ÍÔÊÃÐ Free Chlorine Meter HI95771C HI 95771 is a photometer developed to check chlorine dosing in disinfection processes with high concentrations of chlorine. Thanks to the extended range from 0 to 500 ppm, it is ideal for the food industry, such as in fruit and vegetable washing. HI 95711 also offers an additional range (0.00 to 5.00 ppm) for accurate measurements at lower values, to help control the chlorine level before discharging the treated water. Finally, instrument validation is possible at any time with Cal Check standard cuvets. Range 0 to 500 mg/L Resolution 1 mg/L (10 mg/L above 200 mg/L) Accuracy ±2 mg/L to 100 mg/L Light Source Tungsten lamp with narrow band interface filter 525 nm Light Detection Silicon Photocell Power Supply 1 x 9V battery Auto-Off After 10 minutes of non-use in measurement mode After 1 hour of non-use in calibration mode Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8") Weight 290 g (10 oz.) Methods Standard Methods 4500-Cl Adaptation of USEPA 330.5 method Chlorine Meter Free Chlorine Free-Total Chlorine Hanna HI95771C Total Chlorine Water Quality Meter à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ