Introduction of z.n.stain Mycobacterium Tuberculosis was first introduced by a scientist Robert Koch. This Acid-fast nature was first described by Scientist Ehrlich. The stain for AFB was first introduced by scientist Ziehl and modified by Neelsen. Hensen has discovered the…
Introduction:- Hot air ovens use extremely high temperatures over several hours to destroy microorganisms and bacterial spores. Principle:- When electricity is passed through the heating coils, electrical energy is converted to heat energy. The temperature is controlled by a thermostat. Component:-…
Lyophilization In this process culture is dried rapidly in vacuum from the frozen state. The material is frozen by a suitable method and then dried by sublimation of ice. The sublimation is effected by exposure to an atmosphere of very…