PHARMACEUTICAL MICROBIOLOGY (BP303T)Unit-III. Factors affecting action of Disinfectants and Factors Affecting Choice Of Antimicrobial Agent: Concentration of the disinfectant. Chemical Structure of the disinfectant. Formulation of the disinfectant. Interfering substances in the environment. pH of the surrounding. Potentiation and antagonism of the disinfectants. Surface Tension. Temperature. Time of Contact. Type and no. of microbes present. FACTORS AFFECTING CHOICE OF ANTIMICROBIAL AGENT: Properties of chemical agents Environment Types of microorganisms Intended application Toxicity agents Culture state