The Hanna Instruments HI96822 is a rugged, portable digital refractometer designed specifically for the analysis of natural and artificial seawater in saltwater aquariums. It provides a simple and highly accurate method for determining salinity, replacing the subjectivity and potential errors of traditional analog refractometers and hydrometers. By measuring the refractive index of a water sample, the HI96822 delivers precise, temperature-compensated readings in seconds, ensuring you have the most reliable data to maintain a stable aquatic environment for your sensitive marine life.

This digital refractometer boasts a wide measurement range and displays results in three popular units: Practical Salinity Units (PSU), parts per thousand (ppt), and Specific Gravity (S.G. 20/20). Key features include Automatic Temperature Compensation (ATC) for consistent accuracy, a large dual-level LCD screen for easy reading, and a quick 1.5-second response time. The device requires only a small two-metric-drop sample, is easy to calibrate with distilled or deionized water, and features a waterproof IP65-rated casing for durability in a wet environment.

The HI96822 is the ideal tool for the dedicated reef hobbyist, professional aquarist, or aquaculture facility that prioritizes precision and consistency in their water testing regimen. If you are tired of squinting at analog scales and want to eliminate guesswork to maintain optimal salinity levels for delicate corals and fish, this digital refractometer provides the speed, accuracy, and ease of use necessary for advanced reef keeping. It is a crucial instrument for anyone serious about creating and sustaining a thriving saltwater ecosystem.