Choosing the needle-placement setting

If the needle is placed too high, it may not draw enough sample. If the needle is placed too low, it elevates the risk of introducing debris or precipitates into the system fluidics.

Needle placement is the vertical distance from the tip of the sample needle to the bottom of the sample vial. The default setting for the needle placement prevents the needle from reaching the bottom of the vial.

You can change the default needle-placement setting in the software in two places: on the Dilution tab of the Sample Manager instrument method editor and in the Advanced Settings dialog box.

Note: The default needle-placement values listed in the table above represent the dimension specified by in the figure below.

Vial depth

Sample needle

Distance from tip of sample needle to bottom of sample vial