precision digital seawater tester for fast, accurate readings of salinity, pH, and temperature. It delivers reliable test results to help you maintain stable water conditions in your marine setups. Key features Accurate measurements: tests salinity (salt level), pH, and temperature with precision to support healthy aquatic environments. Clear, easy readings: digital display and a sensitivity probe provide quick, readable results you can trust. Wide applicability: suitable for water, saltwater systems, aquariums, swimming pools, tanks, and other containers. Portable and compact: lightweight, small in size, and easy to carry to any location you need. 23 practical use scenarios Home marine aquarium maintenance: monitor salinity, pH, and temperature to keep reef and fish tanks stable. Saltwater pool or spa care: routinely check salinity and pH to ensure safe swimming conditions. Field or mobile testing: take the tester along for outdoor tanks, boats, or temporary setups to verify water parameters on the go.