Hanna Calcium Reagent (25 Tests) HI758-26 | Hanna Instruments

Hanna Instruments HI758-26 Marine Calcium Checker® HC Reagents (25 Tests)

Keep your Hanna Marine Calcium Checker® HC performing with the accuracy you expect using the Hanna Instruments HI758-26 Marine Calcium Reagents. These genuine replacement reagents are specifically designed for use with the HI758 Marine Calcium Checker® HC, providing 25 precise calcium tests for saltwater and reef aquariums.

Manufactured using high-purity chemicals and pre-measured for consistency, the HI758-26 reagent set delivers fast, reliable, and repeatable calcium measurements. Each package is marked with a lot number and expiration date for complete traceability, helping ensure dependable testing every time. The reagents use Hanna's adaptation of the Zincon method to measure calcium concentrations between 200–600 ppm, making them ideal for monitoring one of the most important parameters in a thriving reef aquarium.

Key Benefits

• Genuine Hanna Instruments replacement reagents

• Compatible exclusively with the HI758 Marine Calcium Checker® HC

• Provides 25 calcium tests

• Pre-measured reagents for fast and accurate testing

• Manufactured with high-purity chemicals

• Lot number and expiration date printed for traceability

• Delivers consistent, laboratory-quality results

• Ideal for reef and marine aquariums

Why Monitor Calcium?

Calcium is one of the primary building blocks used by stony corals, coralline algae, clams, and other calcifying organisms. Maintaining stable calcium levels is essential for:

• Healthy SPS and LPS coral growth

• Coralline algae development

• Strong skeletal formation

• Stable reef chemistry

• Long-term aquarium success

Regular testing allows you to adjust your dosing schedule before calcium levels drift outside the ideal range.

Designed for Accurate Results

Unlike generic test kit refills, HI758-26 reagents are engineered specifically for the Hanna Marine Calcium Checker® HC. Simply add the pre-measured reagents according to the test procedure, and your Checker® provides a digital calcium reading in parts per million (ppm), eliminating the guesswork associated with traditional color-comparison test kits.

Product Features

• Model: HI758-26

• 25 marine calcium tests

• For use with the Hanna HI758 Marine Calcium Checker® HC only

• High-purity, pre-measured reagents

• Measures calcium using the Zincon method

• Clearly marked lot number and expiration date

• For saltwater and reef aquarium testing

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