Tuttnauer 3170 - 4.4 Program 4 - (4 - Liquid)

Page 23 of 58 Pages
4.4 Program 4 – (4 – Liquid)
For liquids when the manufacturer recommends autoclaving at
temperatures of 121ºC with no drying cycle.
Nominal Parameters
 Sterilization temperature: 121ºC (250ºF).
 Sterilization time: 20 mins.
Operations Sequence
 Heating phase; The water enters the chamber and heats up until
the sterilization temperature is reached.
 Sterilization phase; temperature is maintained constant at preset
level for the sterilization time.
 Slow exhaust phase (Ex. Mode=4); steam is slowly exhausted
from the chamber, until it reaches the required temperature of
around 85ºC and the pressure equals the atmospheric pressure.
TIME
PRESSURE (kPa)
TEMPERATURE
Ambient Pressure
and Temperature
t1 t2 t3
t1 =
Heating
stage
t2 = Sterilization stage
t3 = Slow Exhaust Stage
= Pressure
= Temperature