SP VirTis BenchTop 2K, Operator'S Manual

Page: 32 / 56

Basic Operation VirTis BenchTop 2K, 4K and 6K
22 Revision 004, 12/09
Product Preparation: Chamber Drying
BenchTop series freeze dryers can process product in vials or trays directly in the
condenser chamber. To process samples in the chamber:
1. Fill tray(s) or vials with your product.
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Do not exceed more than half of the
container’s total capacity.
2. If using a BenchTop 2K or 4K, ensure that the vacuum baffle plate is in the
desired position (
i.e. , position 1 for pre-freezing or position 2 for freeze-
drying).
3. If desired, insert product probes into the product. For accurate temperature
readings, probe ends should be close to, but not in contact with, the bottom of
the container.
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4. Close and secure the chamber lid.
PRACTICAL OPERATING TIP.
TO MINIMIZE DRYING TIME, ALWAYS FREEZE PRODUCTS IN AS
THIN A LAYER AS POSSIBLE. NEVER FILL A CONTAINER TO MORE THAN HALF ITS TOTAL
CAPACITY.
Quickseal Valves
Quickseal valves are utilized in many method of drying. They permit the attachment of
flasks for
in vitro freeze-drying. They are also used to break vacuum after a cycle
completes. Quickseal valves operate as follows:
Note: Quickseal valves are an integral part of the freeze-drying process and must be
maintained as such. For information regarding upkeep and service of Quickseal valves, see the
General Maintenance section of this manual.
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Refer to Appendix B for a list of standard serum vial capacities.
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For precise positioning of probes in vials, contact SP Industries about optional MVP Probe Holders.
© SP Industries, Inc. 2009