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The Analysis module
13.6.1
Overview of molecular size determination
How to create a
molecular size
curve
The table below is a brief description of how to create a molecular size curve.
Step
Action
1
Perform a run with one or more standards to create a standard curve.
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Note: The standards should contain a number of components of
known molecular size and these should extend beyond the size limits
that are expected in the test sample.
2
Peak integrate the standard curve to produce a peak table.
3
Use the peak table from the standard to produce a molecular size
table. Each peak is represented by a retention value.
4
Select the relevant peaks and input data for the corresponding molecular sizes.
Result: The software plots these values as a molecular size curve.
This curve has an inverse relationship between the logarithm of the
molecular size and retention.
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