Beckman Instruments Biomek 2000, User Manual

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User’s Guide Chapter 3
Document 609909-AA
3-22 Biomek 2000
All of the other parameters are the same as for pipetting and wash operations.
Bulk Dispense
The Bulk Dispense icon button is shown below:
Bulk dispense uses the wash tool to dispense liquid to a plate or a tube. The volume
dispensed in a bulk dispense operation is not as accurate as with a pipette transfer, but
it is quicker because the tool does not have to visit the source labware.
Aspirate Excess turns on the vacuum briefly to bring all of the liquid in the wells to
the same height.
All of the other parameters for a bulk dispense operation are similar to those for wash
and pipette functions.
Purge
The Purge icon button is shown below:
Purge is used particularly in conjunction with the Six Port Valve when changing
buffers. In this situation it is necessary to remove the previous buffer from the lines
before starting to use a new buffer. To use this function, click the
Purge icon in the
Function Palette, then click the tool in the Tool Rack to be purged.
Source Reagent indicates which buffer the tool is to be purged with.
Purge Volume controls the volume of buffer to purge with.
Purge Rate sets the rate of the peristaltic pump.