Hanna HI758U-26 Marine Calcium Checker Reagent

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HI758U-26 Marine Calcium Checker HC Reagents by Hanna

Marine Calcium Checker HC® Colorimeter reagents for 25 tests

The HI758U-26 is the replacement reagent for the HI758 Marine Calcium Checker® HC. These high-quality reagents are manufactured in a state-of-the-art facility.

  • Pre-made reagents for ease of use 
  • Prepared with high purity chemicals 


The HI758U-26 is a high-quality reagent that is pre-measured, allowing for users to achieve fast and accurate measurements with their Marine Calcium Checker® HC. The reagent follows the Zincon Method in which the reaction causes a blue tint in the sample. By simply adding 1 mL of the first reagent to the sample, followed by a packet of the second reagent in the HI758U-26 set, the reaction will take place and the HI758 will determine the concentration from the color that is produced. The result will be displayed in ppm of calcium. This reagents is designed to be used with samples that have an expected range of 200 to 600 ppm calcium.



bottles / packets


25 tests


Zincon method