Multitron Pro - Incubation Shaker
Appendix
2013-02-19
Page
179
of
185
12.3 Additional information of the use of sterile filters
A steam system is sterile by definition. Nevertheless, in case that
non-sterile water is used, we recommend integration of a sterile
filter as an additional precaution (not included):
PALL AcroPackTM 20 with SUPOR membrane 0,2 µm pore
size (0,8 µm pre-filter), sterile
Fig. 111
The filter may be integrated into the water supply tube at any point
between the reservoir and the water inlet, preferably close to the
water inlet.
The bleed valve of the filter must be oriented towards the water
reservoir.
The transparent plastic bell installed on the filter can be discarded.
Operation of the system with sterile filter is identical as described
before.
The supplier’s specification of 5 L of liquid volume is valid for
processing of particle-laden biological liquids. If used for distilled
water that is practically particle-free, the life-time of the filter is much
higher, depending on the quality of the water. It is not possible,
however, to specify the lifetime exactly, please refer to the supplier’s
specification for information about integrity testing.
NOTICE!
A new PALL AcroPack
TM
20 filter will let air pass easily.
Once the filter is wet, air cannot pass anymore. This
means that if the reservoir has run empty, the filter will
prevent self-priming of the system. In this case, the filter
must be removed and placed in a drying oven (max
temp. 131 °C for 30 min, lower temperature
recommended) until the membrane is dry again or the
filter should be replaced by a new filter.
Bleed valve
