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…this? The Hanna Phosphate Checker is an awesome little tool that will give you accurate easy to read results. If you have bad eyes or have a hard time with color change test kits, the digital readout on the Hanna checkers is super easy to read. The biggest key with Hanna checkers is…
Phosphate reagent refills for the easy to use, handheld Hanna Phosphate Checker. * Enough reagent for 25 tests.
Easily calibrate and test proper functionality of your Hanna Checker HI713 Phosphate Low Range for fresh and marine water (saltwater). * Contains Standard A, Standard B and 1 Packet 713-25 Reagent* * Follow instructions in packaging * Acceptable results must be between 0.92 and 1.08…