conductivity tester, handheld device provides a qualitative visual indicator of the conductivity of different solutions, acids or salts, Two brass probes can be touched to a solid substance, or immersed in a liquid, to show conductivity on green LEDs
Temperature range is -30 to 130[degree]C. 0.3% accuracy. Chemically resistant. Measures conductivity, resisivity, and dissolved solids. With glass probe and 9V alkaline battery. For reagent-grade water for CAP, ASTM, NCCLS, ACS. NIST traceable.