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B. For Unwrapped Cycles:
Note: Trays need not be removed for unwrapped cycles.
(1) Before placing a dental handpiece onto a sterilizer tray, make sure
that the instruments that are not of the same metal (stainless steel,
carbon steel, etc.) are separated and placed in different trays.
(2) In case carbon steel instruments are used with stainless steel trays,
the tray should be lined with a towel or paper-wrap before
positioning the instrument. There should be no direct contact between
the carbon steel and the stainless steel trays.
(3) Place a sterilization indicator strip in each tray.
(4) Make sure the instruments do not touch each other during the
sterilization cycle.
Warning:
Unwrapped instruments should be considered not sterile after processing
once exposed to a non-sterile environment.