Operating instructions
8 Directives for sterilisation in MEMMERT- hot-air sterilisers.
For the hot air sterilisation, many directions exist concerning the temperatures and
sterilisation times to be selected as well as the packaging of the sterilisation goods. The
data to be selected, depend on the nature of the goods to be sterilised and on the type of
the germs to be deactivated. Please make yourself familiar with the applicable direction
for your application before carrying out a sterilisation with your MEMMERT steriliser.
Some examples for the correct preparation of different medical instruments are shown in
the following table:
Charging
Instruments with no soft solde-
red parts / sharp Instruments
Modern Syringes (no plastic)
Glass and glass instruments
Preparation
Place the cleaned instruments, twin-packed in aluminium
foil (recommendable)
Place flasks and cylinders separately, twin-packed in
aluminium foil (recommendable)
Disassemble the cleaned glass containers and glass
syringes. Place on trays - cool slowly
Bottles and similar items must be sterilised with the opening pointing downward in order to
prevent the development of cold air nests. Organic fabrics (e.g. cork) must not be used as
closing material for bins.
180°C are usually recommended as sterilising temperature (cf. German drug book DAB 10
or other national standards).
The whole required time period is setted using the timer. The time period consists of the
heating time, the equalising time (i.e. the time it takes until the desired temperature is
reached at any point of the working chamber), of the actual sterilising time and the safety
surcharge.
The following table shows rough values for the hold time to be selected at the controller, in
dependence of the weight of the sterilising load for ovens with and without air turbine (fan).
Please note, that this data can only be applied for correct, loose loading. Information on
the right loading of the oven are given in this operation manual and on the adhesive label
directly on the steriliser.
Sterilisation temperature = 180°C
SM/SLM
200
300
400
500
600
700
800
lo
without
fan
heating
+
sterilising time
3/
4+
3/
4=
11/
2
h
^+3^
=
11/2
h
%+1
1
/4=2h
3/4
+
1
1
/4=2
h
1+1
1
/2=2
1
/2h
1+1
1
/2=2
1
/2h
1
1
/
2
+1
1
/2=3h
w
with fan
heating
+
sterilising time
-
-
i
/2+i=iy
2
h
1
/2+1=1
1
/
2
h
1+1=2h
1+1=2h
1
1
/4+1
1
/4=2
1
/
2
h
Weight of
mec
without fan
heating
+
sterilising time
3
/4
+
1
1
/4=2h
3
/4+1 %=2 h
3
/4
+ 13/
4
=2
1
/2 h
3
/4+1
3
/4=2
1
/2 h
1+2
1
/
2
=3
1
/
2
h
1+2
1
/2=3
1
/2h
1
1
/2+2
1
/
2
=4h
the load
ium
with
fan
heating
+
sterilising time
-
-
3
/4+1
1
/4=2h
34+11/4=2
h
1+11/2=2
1
/2h
1+11/2=2
1
/2h
1 !4+134=3 h
hi
without
fan
heating
+
sterilising time
3/4
+
13/
4
=2
1/zh
3/4+134=21/2
h
1+2=3h
1+2=3h
11/4+21/4=31/2
h
1i/4+2i/4=3i/2h
11/2+21/2=4
h
3h
with
fan
heating
+
sterilising time
-
-
3/4+13/4=21/2
h
3/4+134=21/2
h
1+2=3h
11/4+214=31/2
h
1i/4+2
1
/4=3
1
/
2
h
The sterilisation time has to be multiplied by about 4, if a sterilisation temperature of 160°C
is selected.
UM 200-800/SM 200-400, ULM/SLM 400-800
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