Hanna Marine Magnesium Checker green Considering the degree of care

Considering the degree of care that goes into maintaining most marine aquaria

Salts of Barium

Cost Effective

as accuracy will be affected

The HI719-25 are the replacement reagents for the HI719 Magnesium Hardness Checker® HC

Hanna Marine Magnesium Checker green Considering the degree of careStop relying on chemical test kits that have limited accuracy. Get accurate water testing results with our simple handheld colorimeter for freshwater. Don't waste anymore time matching your sample to a color chart. With our magnesium hardness colorimeter you get more precise technology than your typical chemical test kit. Our handheld colorimeter eliminates the hassle of color matching by providing a direct magnesium hardness result digitally. Easily