Injector Steps

Injector Steps is a diagnostic tool with which the user can walk through the whole injection process while having manual control over the elemental steps. This tool can be especially beneficial during troubleshooting when close observation of each individual step of the injection cycle can be crucial for success.

NOTE

For some commands, there are prerequisite steps that are executed automatically if not already done, see List of injector step commands.

The execution of the Injector Steps tool encompasses the following elementary steps when the Agilent Lab Advisor Software is used:

Select Injector Steps from the list under Service & Diagnostics.
Enter a valid value for the vial location and the injection volume in the Location and Volume fields, respectively.
Select and execute any of the step commands, see List of injector step commands.
Select Back in the bottom right corner to exit the Injector Steps function.

The vial is returned, the metering plunger moves into the home position, and the injection valve switches into the mainpass position.

**Table:** List of injector step commands
Command	Action	Prerequisite Steps^{Prerequisite steps are executed automatically if not already done}
Valve Bypass	The injection valve switches into the bypass position.
Plunger Home	The metering piston moves into the home position.	Valve Bypass
Needle Up	The needle arm moves into the upper position.	Valve Bypass
Vial to Seat	The gripper arm moves the specified vial to the needle seat.	Valve Bypass Needle Up
Needle into Sample	The needle arm moves down and the needle penetrates into the vial. NOTE: Always the default needle offset value (0.0 mm) is applied.	Valve Bypass Needle Up Vial to Seat
Draw	The metering device draws the specified volume into the loop capillary. NOTE: This step can be performed multiple times, although the maximum volume of the analytical head will not be exceeded. Use Plunger Home to reset the metering device.	Valve Bypass Needle Up Vial to Seat Needle into Sample
Needle Up	The needle arm moves into the upper position, lifting the needle out of the vial.	Valve Bypass
Vial to Tray	The gripper arm returns the vial into its original position in the vial drawer.	Needle Up
Needle into Seat	The needle moves down into the needle seat.	Needle Up (only if a vial is present on the needle seat)
Valve Mainpass	The injection valve switches into the mainpass position.	Needle into Seat
Reset	The sampler gets reset and will reinitialize

^[1]Prerequisite steps are executed automatically if not already done.

21-Jun-2025