Liqui-Cel
®
Membrane Contactors
Cleaning Guidelines
22
XI. Storage and Handling Guidelines
The Membrane Contactor that you have purchased can be damaged through improper handling and
storage. The following guidelines are intended to provide a framework for successful storage of these
contactors. If you have any questions, please contact your 3M representative.
Handling:
Proper handling of contactors is critical. Care must be taken not to hit or jar (shock) the
contactor to minimize the possibility of internal damage. It is recommended that the contactors be
stored in a dry, heat-sealed plastic bag or shrink wrap material [0.08 mm (0.003 in.) wall thickness] in
their original box to prevent the introduction of contaminants into the contactor.
Important Note:
All plastic port extensions should be supported to prevent bending of extensions
under excessive piping loads.
Temperature:
Store the contactor dry in their original boxes at temperatures not to exceed 49
o
C
(120
o
F). Contactors stored at very low temperatures < 5
o
C (41
o
F) should be allowed to equilibrate to
room temperature prior to introducing water.
Humidity:
It is recommended that contactors be stored at low to moderate humidity levels (< 60%
relative humidity). Humidity will not affect the components of the contactor but exposure at high
humidity levels may affect the integrity of the cardboard boxes.
Storage Position:
Store the contactors in the horizontal position. Ten inch contactors with SS
housings are packaged in wooden crates. Fourteen inch, 10 inch FRP, 8 x 20 inch and 6 inch
contactors are packaged in cardboard boxes. 8 x 40 inch and 8 x 80 inch contactors are individually
bagged, then cradled on pallets. When storing or stacking contactors care should be taken to secure
the contactors and ensure stability to avoid any possible injury resulting from falling, leaning or any
other accident.
Shelf Life:
Membrane samples from contactors stored for 4 years (room temperature, low to
moderate humidity, heat-sealed bag but not stored in a box) have shown no changes in physical
properties (hollow fiber tensile strength and elongation).
Exposure to Sunlight:
Contactors should not be stored where they are exposed to direct sunlight.
Contactors should always be stored in sealed bags or shrink wrap material and in the original box or
other opaque box.
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