Tork Antibacterial Foam Soap S4 This foam sanitizer helps kill 99.9% of common bacteria which may cause illness.* The NSF E2 rated formula is ideal for hand hygiene-critical settings such as healthcare environments, food processing and food preparation areas. Tork Antibacterial Foam Soap is compatible with Tork S4 Skincare dispensers which are designed to be easy to use and help promote good hand hygiene for all. *Based on ASTM 2783-11 in 30 seconds