Check purity of water with the Apera EC60

The Apera EC60 Conductivity/TDS/Salinity Pocket Tester Kit is a compact, waterproof (IP67) meter designed for quick and reliable measurement of electrical conductivity (EC), total dissolved solids (TDS), and salinity in water.  Great for checking your home or work water supply. It features automatic temperature compensation, a replaceable probe, and easy one-button calibration. The kit includes calibration solutions, a carrying case, and accessories, making it ideal for applications in hydroponics, aquaculture, environmental monitoring, and water treatment. More information and price found here.