Reliable Pocket-Sized TDS Conductivity Tester
Graphite sensor won't oxidize, providing you with better repeatability. DiST4 TDS Conductivity Tester features replaceable probes, offering longer life. Exposed temperature sensor provides faster response time. Also features automatic temperature compensation from 0°-50°C (32°-122°F). Pure Water Tester (PWT) allows you to check the purity of distilled or demineralized water.