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Storing clean utensils next to glass cleaner can cause a chemical contamination.
A clean stainless steel bowl will not cause chemical contamination, which is why you use them.
To avoid cross contamination.
Any contamination can affect results.
How you clean an instrument isn't pretty hard. It is just different how you clean it. Flute: you meed to use a chemical liquid water to clean the inside of the flute only the mouth part.
to prevent cross contamination
Physical contamination can be prevented by not touching the food with dirty hands and to use clean hands and utensils while touching the food
Iodine used to be used to clean surgical instruments, until more effective and less irritating cleansing solutions were developed. Today, a chlorhexidine solution is commonly used to clean surgical instruments before autoclaving them.
Medical asepsis - uses clean technique Surgical asepsis - utilizes sterile technique
They clean their hands so often to prevent infection and cross contamination between patients.
A surgical tech will assist in the operating room, so much training is given to surgical tools, surgical preps, and surgical procedures. One needs to learn sterile technique and what happens when that field is broken, how to clean the equipment, etc.
Alvin Lieberman has written: 'Contamination Controls and Cleanrooms' 'Contamination control and cleanrooms' -- subject(s): Clean rooms, Decontamination (from gases, chemicals, etc.)