For each item on the following list, give a reasonable method of sterilization. You cannot use the same method more than three times for the whole list. The method must sterilize, not just disinfect; and the method must not destroy the item or render it useless unless there is no other choice. After considering a workable method, think of a method that would not work.

Room air...........disposable syringes

Blood in a syringe........carcasses of cows with

Serum...........“mad cow” disease

A pot of soil..........inside of a refrigerator

Plastic Petri dishes......Wine

Heat-sensitive drugs......a jar of Vaseline

Cloth dressings........fruit in plastic bags

Leather shoes from a thrift shop...talcum powder

A cheese sandwich......Milk

Human hair (for wigs).....orchid seeds

A fl ask of nutrient agar.....metal instruments

An entire room (walls, floor, etc.)..mail contaminated with

Rubber gloves........anthrax spores