5 in 1 Digital Aquarium Water Quality Tester

5-in-1 multifunctional water quality testing pen that can measure pH, TDS solubility, EC conductivity, salinity, and temperature. It is an IP67 waterproof water quality testing pen that integrates five functions.

Measurable salinity (sea salt/freshwater salt)

Sea salt: The salinity of sea water is the ratio of total dissolved solids to the weight of sea salt in sea water, usually expressed in grams per kilogram of sea water. (Measurement range 10.1-200.0 ppt)

Light salt: Light water with a salt content less than 0.5g/L (measurement range: 0.00-25.00% accuracy: 0.01-5.00% 5.10-25.00%)