The Hanna Marine Alkalinity Checker® measures alkalinity in dKH units, using a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the read more ››
Replacement reagents for the Hanna Marine Alkalinity (dKH) Checker® HC – HI772. These high-quality reagents are manufactured in Hanna's state-of-the-art facility and are clearly marked with the read more ››
The HM Digital PH-80 has proven to be the MOST reliable pH meter in its price range. It has become a favorite in such applications as hydroponics & gardening, pools & spas, aquariums & reef tanks, read more ››
Measures pH and temperature with simultaneous temperature and pH display. Auto-ranging three point calibration with digital fine tuning. Includes 4 pH buffer solution in a sponge embedded in a clear read more ››
Product Description pH Alert™ is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH read more ››
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