SD handheld waterproof, dust tight meters

The SD range of handheld meters are for the determination of pH, ORP, conductivity, TDS, salinity and temperature. It comprises a range of compact, easy-to-use, handheld instruments for the accurate measurement of: SD 50: pH (0-14 units) and temperature; SD 60: ORP (-1800 to +1800 mV); SD 70: conductivity (0-1999 uS/cm; 2-20 mS/cm); SD 80: total