DISINFECTANTS –are those germicides or chemical
substances which are used to destroy or inhibit the
growth of pathogenic vegetative bacteria (not their
spores) on inanimate (n0nliving )surfaces such such
as glassware or surgical instruments
Ex. Formaldehyde, phenols, ethyl alcohol, soaps
ANTISEPTICS-are those germicides or chemical
substances which are used to destroy the
pathogenic bacteria (not the spores) on animate/
living) surfaces such as skin mucous membranes
STERILIZATION- is the process that kills all the living
micro-organisms including spores, viruses and fungi.
DECONTAMINATION- means marked reduction or
destruction of viable pathogenic organisms to a level
that will allow a healthy persons natural defenses to
prevent any infection.
SANITATION- means reduction in microbial load
from an inanimate surface to a level set forth by
public health department.
PASTEURISATION- is a process of heating milk or
other liquids or semisolids for about 30min at 60-80
c, which kills the non-sporulating micro-organisms
and prevents the growth of food borne pathogens
for specific period of time