can anyone help me to resolve why 70% alcohol is preferred as disinfectant and sterilizing agent over absolute alcohol?
thanks in advance
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disinfectant
Started by genugene, Oct 26 2004 04:38 AM
2 replies to this topic
#2
bob1
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Thelymitra pulchella
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Posted 28 October 2004 - 05:18 PM
Tradition and cost would be my guesses.
#3
Simonsays
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Posted 29 October 2004 - 12:47 PM
In fact, it is not only a question of cost as many would think!!
70% ethanol actually sterilize by precipitating the intracellular bacterial proteins, wich kills them. 100% ethanol is too strong and doesn't "have the time to enter" into the bacteria, so it only precipitate extracellular protein, and it doesn't kill it.
That's what I heard anyway!?!
Simon
70% ethanol actually sterilize by precipitating the intracellular bacterial proteins, wich kills them. 100% ethanol is too strong and doesn't "have the time to enter" into the bacteria, so it only precipitate extracellular protein, and it doesn't kill it.
That's what I heard anyway!?!
Simon
