- Temperature compensated precision: 0–9999 ppm range with 1 ppm resolution and about 2% accuracy. Automatic temperature compensation ensures stable readings across liquids and temperatures. - Data hold for easy recording: Keeps the last measurement on the display so you can note results without continuous observation. - Auto-off to save power: Automatically shuts down after 10 minutes of nonuse, extending battery life. - ATC temperature function: Provides accurate results and displays the liquid temperature to add context to each measurement. - Compact, durable handheld design: Lightweight and easy to use at home, in the lab, or on site; built for regular use with a robust form factor. - Clear, practical applications: Monitor aquarium water quality (fresh or saltwater), verify hydroponic nutrient solutions, or test drinking and processing water for consistent quality. - Quick setup and reliable performance: Ready to measure in seconds with minimal calibration, helping you make informed decisions fast.