The SaltDip is the easiest to use and most reliable salt meter. The SaltDip measures the salt ppm and the temperature (either °F/°C) of your water. Unlike other dedicated salt meters, the SaltDip uses a particular high-end probe that never needs recalibration. The built-in sample cup makes gathering and testing your water sample easy and convenient. The SaltDip only requires the use of two triple-A batteries for operation so you never have to deal with the special watch batteries that can be hard to find and even harder to install. SaltDip is the superior choice for both the professional pool tech and the DIY homeowner.