YSI Oxygen Conductivity Salinity & Temperature Meter Model 85/25 FT. Not Tested.

Sprite Industries 5003 Conductivity Meter NEW

Conductivity / TDS Water Quality Test Meter Aquarium, Swimming Pool, Industrial

Oakton PC700 Bench-Top pH / Conductivity / Temperature Meter w/ AC *See Desc

Fisher Portable Battery Operated Conductivity Meter Model 152

Hanna Instruments Microprocessor HI 9635 Conductivity TDS Meter

Amber Science Model 1056 Portable Electrical Conductivity EC Meter

Oakton 54X002608C Conductivity Meter/TDS/°C, CON 11 Series - USED