The Hanna Instruments HI782 High Range Nitrate Checker HC (ASIN B098H54LH5) is a compact digital colorimeter engineered for fast and accurate nitrate testing in marine environments. Operating via the Zinc Reduction method with just one reagent, this device delivers lab-grade precision without the hassle of manual color interpretation.

Featuring a resolution of 0.1 ppm and an accuracy of ±2 ppm ±5% (at 25 °C), the HI782 measures nitrates from 0.0 to 75.0 ppm (as NO₃⁻). Its intuitive design, lightweight build, and clear LCD display make it a go-to tool for aquarists, marine researchers, and anyone needing reliable high-range nitrate readings.

Powered by a single AAA battery (included), this digital checker enables quick nitrate assessments—ideal for maintaining optimal water conditions in saltwater aquariums.