The main component to the sample is an internal standard, which also serves as the diluent.

Thus adding an internal standard such as ferrocene at some point during the experiment is always necessary.

The element is also used as an internal standard in spectrophotometry.

The internal standard is prepared by mixing together several or all of the samples in the experiment.

The mixture also contained 107 μg of 5-α-cholestane (internal standard).

Perhaps they were benevolent kings under their own, internal standard.

Nuclei are found to resonate in a wide range to the left (or more rare to the right) of the internal standard.

Is Christian speech and practice answerable to the judgment of the world or only to its own internal standards?

Self-sanctions keep conduct in line with these internal standards.

We will be closely monitoring their performance to make sure that they're following the letter of the law and our own stringent internal standards.