Hanna Calibration fluid salt 6.44 20ml (TDS)

Regularly testing the salinity levels in your pool or spa water is essential for maintaining optimal water quality. For accurate and reliable measurements with an electronic water tester, it is important to periodically calibrate (calibrate) the tester.

This calibration fluid has a value of 6.44 g/L and ensures that you always get reliable and consistent test results. The 20ml container is also practical.