The OxyProbe® 12mm dissolved oxygen sensors offer the most rugged and versatile design for benchtop vessels. The compact profile saves space and will fit directly into any port with standard compression fittings or Pg 13.5 threads. The small diameter facilitates DO measurement in small volumes such as spinner flasks and bottles. The polarographic sensor utilizes a long silver anode and small cathode per the industry standard. It also uses the same gas permeable, silicone/PTFE composite membrane reinforced with stainless steel mesh. The OxyProbe withstands steam in place and caustic Clean in Place applications. FDA compliant o-rings are on all product contact surfaces.