Digital Salinity Salt Meter

Digital Salinity Salt Meter - All digital salinity meters are TDS meters which used the 0.5 conversion factor and calibrated by the NaCl solution close to the testing range. The meters only work when the salt is the major TDS content in the water. If you have a salt water pool, the most total dissolved solid in your pool is the salt, about 3000 ppm, you may also have some other dissolved solid in the water but it normally is in the low hundreds ppm, so the meter's ppm reading should be very close to the salt level in your pool. The meter works the same for the koi pond when you need to add 1000-3000ppm (0.1-0.3%) salt to the pond water.