Bluelab Conductivity Pen - Features - 1) Compact handheld design for convenient use                        2) Bright, easy-to-read backlit display 3) Measures conductivity in EC,ppm 500 (TDS), or ppm 700 4) Factory calibrated and ready to use immediately 5) Read temperature in °C or °F 6) Waterproof and floats in any solution. |