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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... -
(HI783) Marine Magnesium Checker HC Handheld Colorimeter - Hanna Instruments
Hanna Instruments$63.95THESE ARE THE NEWLY UPDATED REAGENTS. Now 1x powder and 1x liquid. The testing process is the same as Alkalinity HI772 with one second liquid reagent. The HI783 Marine Magnesium Checker HC is a handheld colorimeter that uses the Beer-... -
(HI784) Marine Ammonia Checker Handheld Colorimeter (Saltwater) - Hanna Instruments
Hanna Instruments$63.95The HI784 Marine Ammonia Checker HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of ammonia colorimetrically. The HI784 is designed specifically to measure ammonia levels in a saltwater aquarium. The 0.00...