This Broadley-James PH DynaProbe II Conductive Rugged Sealed Sensor ST951-T33D-N07S5 is in unused condition and is guaranteed to be fully functional. These sensors came from a local manufacturer that had surplus new old stock inventory. Please feel free to contact us with any questions. The ST951 is a rugged, sealed sensor assembly designed for in-line or submersion applications. The patented solid state reference cell features the unique IonTrap? design for extended service life in the most severe applications. The body is molded from chemically resistant Ryton (PPS) and the reference junction is either porous Teflon or wood. Built-in temperature compensators are available. Optional sensor guard locks onto the front of the sensor and protects the sensor tip from impact. SPECIFICATIONS pH Range 0-14 pH Range ORP Range 5000 mV Temp Range 0 -120º C Max Pressure/Temp 50 psig at 120º C Reference Ag-AgCl Wetted Materials Conductive Ryton, Teflon, Glass, Viton O-Rings Standard cable length 7 Feet