Opening And Closing The Biosafety System; Explanation; Lid With Screw Cap And Hole - Hettich Rotina 420 R Mode D'emploi

6.6

Opening and closing the biosafety system

6.6.1

Explanation

6.6.2

Lid with screw cap and hole

1
2
Fig. 23: Biosafety system
1 Rotary handle
2 Rotor
3 Lid
4 Key
Closing
Opening
AB4701en
The user must take appropriate actions when centrifuging hazardous sub-
stances or mixtures of substances that are toxic, radioactive or contami-
nated with pathogenic microorganisms.
Centrifuge tubes with special screw caps for hazardous substances must
always be used.
For materials of risk group 3 and 4, a biosafety system must be used in
addition to the sealable centrifuge tubes (see the World Health Organisa-
tion's "Laboratory Biosafety Manual").
In a biosafety system, a bioseal (sealing ring) prevents droplets and aerosols
from escaping.
If the bucket of a biosafety system is used without the lid, the sealing ring
must be removed from the bucket to prevent damage to the sealing ring
during the centrifugation run.
Damaged biosafety systems are no longer microbiologically tight.
If no biosafety system is used, a centrifuge is not microbiologically tight in
the sense of the EN / IEC 61010-2-020 standard.
Storage of biosafety systems
Biosafety systems must only be stored with the lid open to avoid damage to
the sealing rings during storage.
3
4
1. Place the lid (
2. Insert the supplied key (
3. Turn the lid (
1. Insert the supplied key (
2. Turn the lid (
3. Remove the lid (
Rev.: 19 / 02.2025
3 ) centrally on the rotor ( 2 ).
4 ) into the hole in the rotary handle ( 1 ).
3 ) at the key ( 4 ) clockwise until it is tightly closed.
4 ) into the hole in the rotary handle ( 1 ).
3 ) at the key ( 4 ) anticlockwise until it is open.
3 ) from the rotor ( 2 ).
Operation
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