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To work aseptically means that you work in a way that will prevent disease-causing microorganisms to contaminate the material you are working with, without the use of chemical disinfectants. Chemical disinfectants (= germicides) are substances used to inhibit the growth of or to kill microorganisms on either an object or a body surface.

An antisepticum is a substance that is used to inhibit the growth of or to kill microorganisms on a body surface.

A bactericide is a substance that kills bacteria. A bacteriostatic agent (= bacteriostat) is a substance that inhibits the growth of bacteria.

A germicide is a substance that kills not only bacteria but also other microorganisms.

Updated: 2014-01-22.