Page 31 of 56 Pages
4.7
TEST 2 – B&D TEST
Bowie & Dick test program, with fixed sterilization parameters 134
º
C and
3.5 minutes, which cannot be modified by the operator or the technician.
Nominal parameters default settings
Sterilization temperature: 134
º
C
Sterilization time: 3.5 minutes.
Dry time: 2 minutes.
Operations Sequence
Air-removal stage; four vacuum pulses are performed.
Heating stage: steam is inserted into the chamber until the sterilization
temperature is reached.
Sterilization phase; temperature and pressure are maintained constant at
the pre-set level 134ºC for sterilization time 3.5 minutes.
Fast exhaust stage; steam is exhausted out of the chamber at a fast rate
until pressure decreases to ambient pressure.
Dry stage; heating of chamber followed by a vacuum break (air inlet) to
remove leftover moisture from the instruments and wraps.
If the B&D test cycle failed, the screen color changed from purple to yellow
If the B&D test cycle ended successfully "Test Ended" message will display and
the screen color will remain purple
