Fisher Portable Battery Operated Conductivity Meter Model 152

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

Fisher Scientific Accumet Portable AP115 Laboratory pH/ORP Meter Working

Hanna CONMET 1W Conductivity Meter Kit HI3291 Tested Working

Amber Science Model 1056 Portable Electrical Conductivity EC Meter

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

Fisher Scientific Conductivity Meter Model 152 Portable Lab Kit with Case

Amber Science Model 1056 Portable Electrical Conductivity EC Meter