Oakton CTS Testr 50 Conductivity/TDS/Salinity Tester, Waterproof, Pocket – Used
Premium Testr 50 series electronics for stable, accurate readings. CTS Testr 50. Conductivity TDS salinity tester. Oakton 35634-65. Oakton WD-35634-65. Cup-style conductivity tester. Waterproof pocket tester.