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Important Information
The goal of the installation procedure is to prepare a new QuickSwap
accessory to run one of the checkout methods on this CD. All of these methods
use a 100-µm id restrictor.
If you are changing an existing restrictor, or if you prefer to install a different
id restrictor, or do not want to use one of the checkout methods supplied, most
of the procedure still applies. However, you will need to consult the
Manual
pressures, and temperatures.
Initial installation
Agilent recommends beginning with a 100-µm id restrictor. It is used in the
checkout methods on the CD, and is a good general use choice.
Restrictor change
If you find that your methods require a different restrictor size, you must vent
the MSD, make the change, and then pumpdown. This takes time, so it pays to
explore the available parameters before deciding to change. The
user-contributed Flow Calculator and Method Translator utilities are very
helpful tools for this task.
Purge gas
The purge gas is usually the same as the carrier gas, with one very important
exception. Do not use hydrogen or any other flammable gas as the purge
gas, regardless of the carrier gas choice.
Quickswap protects the entrance to the MSD when the column is disconnected
by blanketing the connection with purge gas. This gas flows into the column
oven. Hydrogen or other flammable gas would present a serious fire and
explosion hazard if allowed to flow into the oven.
Hydrogen is both a fire and explosion hazard when mixed with air. For this reason,
WA R N I N G
hydrogen must not be used as the purge gas.
QuickSwap Installation and Startup
and its discussions of methods, restrictor selection, flows and
Important Information
Reference
15
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