Empower Tip: Data Acquisition and the Sample Set Method

When we purchase an analytical standard, the supplier provides a certificate of analysis which includes the purity of the standard. We then need to incorporate that purity factor into Empower so that our calibration curve will be adjusted to reflect the purity.

Here is how it’s done.

Click Browse Project in the navigation bar.

Click the Sample Sets tab, right-click on a sample set, and select Alter Sample.

Click the Amount tool.

Click the Purity (Vial) tab.

Enter the Purity for the component(s). The allowable range is 0.001 – 150.000%.

Click OK to the Component Editor.

Save all changes in Alter Sample and exit out.

Right-click on the Sample Set and select Process. Select the proper method set or processing method and click OK.

Select the Result Sets tab, right-click on the new Result Set and select Review.

Click the Calibration Curve tool in the toolbar and observe the X Value in the point table. In the case of Acetone, the amount entered for standard 1 was 937.500. With the purity of 99.0 entered, the amount used for the calibration curve is 928.125.