Compact water quality tester with indirect TDS reading Precise readings: Measures water conductivity to infer TDS, providing a straightforward assessment of water quality with minimal steps. Easy data storage: Builtin memory saves measurement results for quick review and accurate recordkeeping. Fast, simple operation: Power on, gently stir the sample, and the LCD stabilizes within seconds for a reliable result. Broad compatibility: Suitable for aquariums, schools, laboratories, pools, beverages, and food processing; compact handheld design for everyday use. Use scenarios: Home water testing: verify tap or well water quality for safe consumption. Aquarium or hydroponics: monitor water quality to protect aquatic life and plant growth. Beverage production or pool care: perform routine QC to ensure consistency and safety.