There are some chemical
substances which are gaseous in nature that are used in the laboratory for
sterilization i.e formaldehyde and ethylene oxide. This substance is used as an
alternative when autoclave is not available. Formaldehyde is use to for
sterilization of bacterial spore and fungi, and the method is still in used
till today in some laboratory. Another gases used is ethylene oxide, but
ethylene oxide is a carcinogenic substance because of these, it is very risky
to use, and restriction of uses has been place on it all over the world. But is
still in used in some laboratory and hospital today with a very strictly
precaution adhere to in other not to release the substance into the environment
to cause harm to the populace.
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