Sterilization can be accomplished by heat (as in the autoclave), chemicals (as with glutaraldehyde) or radiation. Your average outpatient office uses heat or chemical sterilization.
sterilization
optical surveying instrument
England
Oral contraceptives (or "the pill") Sterilization
Whittaker`s classification is not solely applicable to biological classifications.
When a liquid is heat labile or can be destroyed by heat then this method is used.
dry heat sterilization
cell
sterilization
The scientific method is a way of thinking. There is no instrument that is needed to define it, unless you count logic as an instrument.
Cold sterilization is a process in which sterilization is carry out at low temperature with the help of chemicals, radiations, membranes and all other means excluding high temperature. Ionizing radiation such as x-rays,gamma rays and cosmic rays, cause no appreciable increase in temperature in this method ,it is referred as cold sterilization
Usability is what is referred to as the administration of the instrument in research method. Also, within the research method, you will find validity and reliability.