Exception Focused Review - Same Instrument Methods - Tip285

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Article number: 238044

OBJECTIVE or GOAL

Ensure that all samples in a sample set were collected with the same instrument method.

ENVIRONMENT

Empower
Empower Tip of the Week #285

PROCEDURE

This Tip of the Week reviews the way to ensure that all samples in a sample set were collected with the same instrument method. This is done with Custom fields. Custom fields verify that the instrument method used for all injections has the same ID number. Type the Instrument Method ID into the CConst3 field on the Components tab within the Processing Method.

STEP 1
Create a Peak Custom Field, data type Boolean. If the Instrument Method ID does not equal the value specified in the CConst3 field, it will return "Incorrect Instrument Method Used" for each peak. If the ID number equals CConst3, it will return "OK" for each peak. We summarize the results of this custom field in the subsequent Result Custom Field found in Step 2 (Figure 1).

STEP 2
Create a Result Custom Field, data type Boolean. This custom field summarizes the results of the custom field created in Step 1. If the previous custom field returns "OK" for each peak, then this custom field returns "OK". If the previous custom field returns "Incorrect Method Used", then this field returns the same for the Result (Figure 2).

STEP 3
The returned values for Custom Field #1 can be viewed in the Peaks table under the chromatogram in the Main window within Review (Figure 3).

STEP 4
The returned value for Custom Field #2 can be viewed in the Chromatogram Result table in the Results window within Review (Figure 4).

STEP 5
You can create a View Filter on the Results tab of the project window to include Custom Field #2. This shows that all samples in this sample set were collected with the same instrument method (Figure 5).

ADDITIONAL INFORMATION

This can be done with either the Pro or QuickStart interface.