Water Quality Conductivity Meter Lutron CD-4302 is a professional device for measuring conductivity in water, wastewater, and industrial samples. Engineered for accuracy and efficiency, the Water Quality Conductivity Meter Lutron CD-4302 offers quick calibration, a large LCD display, and durable design perfect for lab and field testing.  Applications: Suitable for labs, schools, aquariums, and beverage or plating applications.