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.
||0.00 to 0.90 ppm
||+/- 0.02 ppm +/- 5% of reading
||adaptation of the Standard Methods for the Examination of Water and Wastewater, 20th edition, Ascorbic-Acid method. The reaction between phosphate and the reagent causes a blue tint in the sample.
|Photometer/Colorimeter Light Source
||LED @ 525 nm
|Photometer/Colorimeter Light Detector
||(1) 1.5V AAA
||after seven minutes of non-use and two minutes after taking a reading
||0 to 50°C (32 to 122°F); RH max 95% non-condensing
||64 g (2.25 oz.)
||86.0mm x 61mm x 37.5mm (3.4" x 2.4" x 1.5”)
||HI774 Checker® is supplied with (2) sample cuvettes with caps, phosphate ULR reagent for 10 tests, battery, instructions and quick start guide.