The Hanna Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time-consuming to calibrate and maintain. The Checker® is both accurate and affordable.
|Range||0.00 to 2.50 ppm (mg/L)|
|Resolution||0.01 ppm (mg/L)|
|Accuracy @ 25°C||±0.04 ppm (mg/L) ±4% of reading|
|Light Source||LED @ 525 nm|
|Light Detector||silicon photocell|
|Environment||0 to 50°C (32 to 122°F); RH max 95% non-condensing|
|Battery Type||(1) 1.5V AAA|
|Auto-off||after two minutes of non-use and ten seconds after reading|
|Dimensions||81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)|
|Weight||64 g (2.25 oz.)|
|Method||adaptation of the Standard Methods for the Examination of Water and Wastewater, 20th edition, Ascorbic Acid method|
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