Hanna Instruments Checker Phosphorus Ultra Low Range Colorimeter

HI 736 Checker HC Colorimeter - Phosphorus Ultra Low Range - 0 - 200 ppb The Hanna Checker HC is a handheld colorimeter that delivers the accuracy and resolution of a professional-grade instrument, with the simplicity and affordability of a basic chemical test kit. This pocket-sized tester will save you hundreds of dollars in hi-tech equipment, while eliminating the need for complicated calibrations and maintenance.This particular model quickly and accurately measures Phosphorus levels (0 to 200 ppb) in freshwater, marine, and reef aquariums to help you maintain optimal conditions for your precious inhabitants. It features user-friendly single button operation, and displays its precise readings on a large and easy-to-read LCD.Weighing in at only 64 g (2.25 oz), the Hanna Checker HC is an ultra-portable water tester. This compact unit features an ergonomic design that fits perfectly in your pocket or the palm of your hand. It includes the single AAA battery required for operation, as well as an automatic shut-off function that triggers after 10 minutes of inactivity to preserve battery life.The HI 736 Phosphorus Ultra Low Range Checker HC comes complete with hard-shell travel case, sample cuvettes with caps (2), phosphorus ULR reagent starter kit for 6 tests (6 powder reagent packets), AAA battery (1), instructions, and quick start guide.Specifications:Range:0 to 150 ppmResolution:1 ppmAccuracy @ 25C:3 ppm 5% of readingLight Source:Photodiode @ 575 nmLight Detector:Silicon photocellEnvironment:0 to 50C (32 to 122F); RH max 95% non-condensingAuto-off:After 10 minutes of inactivityMethod:Adaptation of the Standard Methods for the Examination of Water and Wastewater, 20Th edition, Ascorbic Acid method. The reaction between phosphorus and the reagent causes a blue tint in the sample. 3.2'' x 2.4'' x 1.''