Dyes E.g. Brilliant green Malachite green Crystal violet . highly selective for Gram-positive bacteria. Uses . for treatment of dermatological lesions. . for formulation of selective culture media.
Alkylating agents E.g. Formaldehydde
Glutaraldehyde Ethylene oxide Formaldehyde 37% aqueous solution form is named as formalin. Uses:
. Preservation of fresh tissues. . Preparation of vaccines from bacterial surfaces, viruses and toxins.
. Bactericidal including spores. Glutaraldehyde
. 10 times more effective than formaldehyde. . cold sterling for medical-surgical instruments. Ethylene oxide
. gaseous sterling chemical. Use: sterilize medical-surgical devices that would be damaged by heat.