Hanna HI755 Saltwater Alkalinity Colorimeter - 0-300 ppm for Reef Aquariums 810666002002 5″ x 13″-Replacement Filter: PMC-34RF

5″ x 13″-Replacement Filter: PMC-34RF

Reduces polarization effects and does not oxidize resulting in a reliable and accurate reading

making it ideal for hydroponics

Attach the X10 pre-filter to your garden hose

Hanna HI755 Saltwater Alkalinity Colorimeter - 0-300 ppm for Reef Aquariums 810666002002 5″ x 13″-Replacement Filter: PMC-34RFProfessional Saltwater Alkalinity Colorimeter for Reef & Marine Aquariums The Hanna HI755 Checker HC is a portable, professional grade saltwater alkalinity colorimeter designed for accurate alkalinity measurement from 0 to 300 ppm (mg L) CaCO in reef aquariums, marine tanks, and saltwater aquaculture. This handheld photometer delivers lab quality results with simple operationjust add reagent, insert the cuvette, and read alkalinity on the easy to read