Hanna Marine Magnesium Checker HC - HI783 aquarium salinity tester Dual Line EC/TDS Monitor w/

Dual Line EC/TDS Monitor w/ 4-20mA Output

pre-measured reagent dose using the industry-standard DPD colorimetric method

Calibrate with confidence using Milwaukee M10004B — a certified

470 mV) recommended for optimal accuracy

break rooms

Hanna Marine Magnesium Checker HC - HI783 aquarium salinity tester Dual Line EC/TDS Monitor w/The first Magnesium test of its kind for saltwater aquariums, our Marine Magnesium Checker HC (HI783) is just what every reef tank owner needs. Struggling with test kits is now a thing of the past. Stop guessing or interpreting a color change by eye. Get a fast, accurate digital read out every time. Perfect for testing and measuring Magnesium levels in saltwater aquariums, reef tanks, and other marine and aquaculture applications. Easy to read,