Hanna Instruments (HI758-26) Marine Calcium Checker HC Reagents (25 Tests) - HI758-26 Mixed Bed DI1425 The 30-inch rod length is

The 30-inch rod length is suited for standard residential and light commercial brine tanks

you may need to change them sooner

The Omnipure E5655 is designed for use as a final polishing stage in reverse osmosis systems

and valves from premature fouling

Maximum service life

Hanna Instruments (HI758-26) Marine Calcium Checker HC Reagents (25 Tests) - HI758-26 Mixed Bed DI1425 The 30-inch rod length isThe HI758 26 reagent set delivers 25 precise calcium tests for the Hanna Marine Calcium Checker HC, manufactured to laboratory standards with clear lot tracking and expiration dating. Each pre measured reagent pair uses the Zincon method to produce reliable colorimetric results in the 200 600 ppm range for marine aquarium calcium monitoring. SPECIFICATIONS HI758 26 Reagent Details Model Number HI758 26 (also listed as HI758U 26) Compatibility Hanna