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Disinfectants

QuestionAnswer
Factors influencing disinfectant (8) Type, time exposure, nature of microbiota, pH, temp, concentration, number of microbiota, material to be disinfected
Desirable features of disinfectant (7) Cheap and available, safe for body tissues, rapid action, safe for clothes, high penetrating power, effective on most microbiota, stability
Halogens Tinsure of Iodine, Hypochlorites, Idosphore, oxidizing agents, do not act well in the presence of a lot of microbiota
Tinsure of Iodine Iodine crystals dissolved in alcohol
Hypochlorites Used in bleach NaOCl
Idosphores Used in detergents
Alcohols Lipolytic, 70% dilution is better than concentrate, isopropyl (rubbing alcohol) and ethyl (grain) alcohol
Aldehydes Reducing agents, inactivate proteins and cross links between them
Formalin 37% aqueous solution of formaldehyde by weight, 40% by volume
Glutarihyde cold of liquid sterilization
Phelolalic compounds injury to lipids
Phenol coefficient Phenol was used as base of comparison at one time
Creysol Lysol, surface disinfectant
Hexachlorophene Antispetic
Quaternary ammominum compounds Surface tension reducers, expose microbes so they can be washed away with water. Zephrian (benzelonium chloride)
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