The Oakton WD-35634-35 PCTSTestr 50 pH/Cond/TDS/Salinity Pocket Tester is a versatile and reliable tool for measuring pH, conductivity, total dissolved solids (TDS), and salinity in various industrial and commercial settings. With a trusted brand like Oakton and a specific model designed for accurate measurements, this pocket tester provides useful data for quality control and monitoring purposes. Its compact size makes it convenient for on-the-go testing, ensuring that water or solutions are within the desired parameters for optimal performance or safety.