User`s guide

Operation
145
Figure 40 Options Tab
If you have the Standard Injection option installed, but do not need
to use it, then de-select it here. You can enable heated sample tube
purge, Inlet and Outlet sample Splitting and multiple injections from
a single tube from this tab. You will also select the various ATD/TD
operating modes from this tab.
Standard Injection—If your ATD/TD is equipped with the optional
Internal Standard Addition accessory (P/N M041-3657) you can
enable or disable the option from this tab. A standard can
automatically be introduced onto every sample tube prior to
desorption. The standard is added after the tube is purged.
If you have enabled this option, then you must enter a standard
injection time on the Timing tab. (See Standard Inject Time in the
Timing tab section above). The Internal Standard (IS) valve is
activated for the duration of the Standard Injection time to allow the
introduction of a volume of standard onto the sample tube. After the
end of the standard injection time, the IS valve is closed and the
ATD/TD will proceed with desorption of the tube.