This portable digital water quality tester comes with a high-contrast LCD screen for clear, instant readings under any lighting. Built with high-sensitivity probe and automatic temperature compensation, it delivers stable, precise test data and eliminates temperature-induced measurement errors. It supports multi-parameter detection including pH, TDS, EC and water temperature, covering daily water monitoring demands comprehensively.

Featuring a handy pen-shaped lightweight body, it fits pockets and bags for convenient on-site testing. The data lock function freezes readings for easy recording, while auto power-off extends battery life for long-term frequent use. Its durable replaceable probe lowers maintenance costs greatly.

Perfect for testing drinking water, aquarium tanks, swimming pools, hydroponic nutrient solutions and school lab experiments. Simple operation without complicated calibration makes it an essential, cost-effective water testing tool for families, gardeners and hobbyists.