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4.2 PROGRAM 2. Wrapped Instruments and Porous Loads
For wrapped instruments and materials, when the manufacturer
recommends autoclaving at temperatures between 250°F and 274°F
(121°C and 134°C) with a drying stage.
Nominal parameters default settings
♦ Sterilization temperature: 273°F (134°C).
♦ Sterilization time: 7 minutes.
♦ Dry time: 30 minutes.
Operations sequence:
♦ Heating by actuation of electrical heaters until the sterilization
temperature is reached.
♦ Sterilization temperature is maintained constant for the preset
sterilization time.
♦ Fast exhaust, steam is exhausted out of the chamber at a fast rate until
pressure drops to 4 psi abs. (124 kPa abs.).
♦ Dry heating and forced air circulation for 30 minutes to remove
leftover moisture from the instruments and wraps.
PRESSURE
(kpa)
TEMPERATURE
Ambient Pressure
and Temperature
t1 t2
t3
t1 = Steam generation stage
t2 = Sterilization stage
t3 = Fast exhaust stage
= Pressure
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