For use with the following Sper Meters: Meter Description 850055 Advanced pH Meter 850060 pH SD Card Logger Meter 850081 Water Quality Meter 860031 Benchtop pH / mV Meter 860033 Benchtop Water Quality Meter Specifications Unit of Measure: Range: Resolution: Accuracy: mV -1999 to 1999 1 ±0.5%+2d Operation Temperature: 0 to 60 degrees C /32 to 140 degrees F Probe Dimensions: Probe Length: 4.5 114 mm Probe Diameter: 12 mm Cord Length: 37.4 Plug: BNC Connector Body Material: Epoxy Response Time: seconds