Cathode: Platinum.Anode: Silver.Polarization: ~675mV.Output: 40 to 70nA in air at 25 degreesC.Temperature: 0 to 60 degreesC; Sterilization to 130 degreesC.Stability: 2% or Readout per week at constant pressure/temp 30 degreesC.Linearity: Better than +-0. 3% of readout.Pressure: 60PSI maximum.Material: Wetted parts 316L SST.O-Ring: Viton