Question

why Non absorbent cotton is used in cotton plugs ?​

Answer 1

Explanation:

as it cannot absorb the moisture or air in the test tube during culture of tissue.

Answer 2

Explanation:

• Cotton plugs are generally used to stop air movement that might carry microbes.
• Cotton plugs are sometimes used in equipment when sterilized in an autoclave, also in the tops of agar flasks in the autoclave.
• Cotton plugs are used in test tubes, again to prevent contamination through the air.
• An absorbent cotton sinks in water but an non absorbent cotton floats on the water because of its fatty substance.
• An absorbent cotton because of its softness is widely used in surgical dressings,cosmetic purposes etc whereas non absorbent cotton is widely used in plugging of test tubes and glass wares.