PerkinElmer OilExpress 4, User Manual

Page: 77 / 152

Getting Started with OilExpress 4 . 77
The Batch Sample height is used for all sample analyses by default. If your SOPs mandate
that sample containers are filled to a set height, then you will not need to modify the fixed
heights after they have been defined once, and you do not need to enter any sample height
information into the Samples table.
However, if some sample containers were not filled to the same height as the rest of the
batch, you can edit the
Sampling Height
column in the Samples table to set the sampling
heights individually. You can enter a custom value for a sample or select to use the
Control
Sample
or
Batch Sample
height.
Similarly, if you are using the ultrasonic height sensing option you can select to use the
Auto
generated height, or if you want to aspirate from a specific region of a sample, you can enter
a custom value to override the sensed height.
In the example in Figure 46, the first sample will use the Control Sample height (defined on
the Autosampler Setup dialog at 40 mm), the second will use the Batch Sample height
(defined at 60 mm), and the third will use the custom value of 32 mm entered on the
Samples screen. The Sampling Height cell for the fourth sample is blank, and so will use the
Batch Sample height, by default.
Figure 46 Sampling heights in the Samples table
The sample height information entered in the Samples screen will be saved and can be
viewed in the Database Results in the Results Browser.
NOTE: For more information about the Samples table, refer to the OilExpress 4 on-screen
Help.
For more information about setting up and running a sample analysis, refer to
Running an
Analysis
on page 78.
The
System Check (mm)
fixed height is used for the Cell Contamination check and the
Pathlength Calibration. The default is 20 mm. Ultrasonic height sensing is not available for
these options.