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Program 5 Wrapped – 270
This program is intended for wrapped materials (i.e. instruments), porous load
and other goods, which its manufacturer declares their compliance to be sterilized in
the following conditions:
♦
Sterilization temperature 270ºF
♦
Sterilization time: 3 min.
♦
Dry time: 15 min.
Performance description:
Residual air
is displaced due to 4vacuum pulses (down to 25 kPa) and 3 steam
pulses up to 160 kPa. The 4th vacuum pulse is followed with introducing saturated
(controlled) steam into the chamber to the required sterilization temperature.
Sterilization period
is controlled in a way that the sterilization temperature will not
drop below the required temperature, neither increase by more than 37.4ºF. The
saturated steam conditions are controlled in a way that the fluctuation of pressure
does not allow a drop below 1kPa, neither an increase of 3 kPa above the high limit
of the Ste. Temperature.
Fast exhaust
stage is performed by discharging rapidly the pressure from the
chamber. When the pressure reaches a level of 115 kPa the vacuum pump is
activated till a pressure drop to 25 kPa.
Drying
is achieved by evacuating the vapor from the chamber in "under-pressure”
phase along a period of 15 minutes.
Pressure equilibration
. To enable the door to be opened, air is introduced to the
chamber through a microbiological filter till equilibrium with atmospheric pressure.
Note:
The pressure of the chamber must be below 115 kPa to enable the door to be
opened.
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