The Covidien Curity Sterile 2-Ply Alcohol Prep Pad 200/bx. Made with premium 2-ply non-woven material, these alcohol wipes are soaked with 70% isopropyl alcohol, are sterile and individually wrapped. The Covidien Curity 5750 Alcohol wipes quickly clean the skin so any mic tape can effectively stick.. Each alcohol prep pads is individually wrapped in easy open airtight, poly-lined foil pouches to ensure pas saturation and prevent dryness.