A new inactivating medium for hexachlorophene (G-11).

The use of nonionic surface-active agents for the inactivation of Hexachlorophene (G-11) is discussed. Tween-80 is found to be more effective than serum, serum albumin, and globulin in inactivating the antibacterial properties of as much as 0.1 per cent Hexachlorophene in broth. In hand and arm wash studies using Hexachlorophene soaps, Tween-80 is found to give a much higher number of surviving organisms than in those in which serum was used.