STERIS’s Vesta-Syde SQ 128 Ready to Use Quaternary Ammonium Disinfectant family of products is a one-step cleaner and disinfectant formulated for use on hard, non-porous surfaces. Made with same main ingredients as the Vesta-Syde SQ Disinfectant concentrate, Vesta-Syde SQ 128 RTU Disinfectants kill a broad spectrum of common bacteria and fungi. The sterile version, Vesta-Syde SQ 128 st RTU, is double bagged and gamma irradiated for easy entry into aseptic areas. At a use-dilution rate of 0.8% v/v (1:128), Vesta-Syde SQ 128 Ready to Use Disinfectant requires no mixing or activation for convenient and consistent use.