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Hanna Instruments Checker Handheld Colorimeter for Calcium is a professional-grade digital colorimeter designed to deliver fast, accurate, and reliable calcium measurements in reef and marine aquariums. Calcium is a critical parameter in reef aquariums, playing an essential role in coral skeletal development, coralline algae growth, and the overall health of invertebrates and other reef inhabitants. Unlike traditional drop-based test kits that rely on subjective colour interpretation, the Hanna Checker eliminates human error by electronically reading and displaying precise calcium values in ppm (mg/L), providing laboratory-quality accuracy in a compact and easy-to-use handheld device. Replacement reagent kits are available separately.
Test Range: 200–600 ppm (mg/L) | Method: Colorimetric | Compatible Reagents: HI 758-26 | Battery: 1.5V AAA
Dispatched from our Melbourne facility, usually within 1-2 business days. Delivery time and cost are calculated at checkout based on your address.
We stand behind everything we sell. If something is not right, get in touch and we will make it right. See our returns policy for the details.