Process Vesphene® II st sterile gallon is a one-step, alkaline phenolic cleaner/disinfectant specifically formulated for use on hard, non-porous surfaces. Process Vesphene II st is gamma irradiated to ensure sterility and double bagged for ease of introduction into aseptic areas. Process Vesphene II st is buffered to maintain a use dilution pH of 10.4 – 10.6 and is ideal for use in a disinfectant rotation program with Process LpH st.