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HI782 Marine Nitrate High Range Checker - Hanna Instruments
Hanna Instruments$63.95The HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwater aquariums and marine applications. With a digital read out, there is no more struggling to determine colors... -
HI772 Marine Alkalinity (dKH) Checker HC - Hanna Instruments
Hanna Instruments$64.95The Hanna Marine Alkalinity (dKH) Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color...