6.8 Storage
B
acteriostatic solution
BPG columns packed with media should be stored in the bacteriostatic solution
recommended for the media. Refer to your media instructions for media-specific
recommendations. Refer also to Section 8.2 Chemical resistance, on page 132. Avoid
any solution that may compromise the quality of the media.
Follow the instructions below to apply bacteriostatic solution:
Step Action
1 Clean the column before applying bacteriostatic solution, for example with
0
.5M NaOH, or other CIP solution recommended for the media.
2 Rinse the column from all chloride ions.
3 Rinse with purified water after the CIP for at least five column volumes (CV).
4 Apply the bacteriostatic solution and the column is ready to be stored. See
the instructions below for storage of the BPG column.
Store the BPG column
A
void storage conditions that could expose the column to extreme changes in temper-
ature.
If the column is intended to be stored for longer periods of time, change the storage
solution at regular intervals, for example every 3 months.
Follow the instructions below to store the BPG column:
Step Action
1 Disassemble the column.
2 Perform routine maintenance, i.e., replace O-rings etc.
3 Thoroughly dry all column components.
4 Assemble the column.
5 Seal all inlets and outlets as indicated in wet storage protocol above.
6 Wrap column in plastic to prevent exposure to dust and other airborne
c
ontaminants.
7 Store column at controlled ambient temperatures in a clean and dry envi-
ronment.
6 Maintenance
6
.8 Storage
BPG Columns Operating Instructions 29193223 AB 119
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