Sentence examples for pure standard from inspiring English sources

Samples were analyzed by HPLC and the antioxidants were identified by comparison with pure standard retention times and UV spectra.

The two meetings that Henin was referring to were both won by Clijsters, the first a final in Brisbane in January, arguably the best match of the year so far in terms of its pure standard.

This year it's been two times 7‑6 in the third, so very close and I hope it's going to be another good one". The two meetings that Henin was referring to were both won by Clijsters, the first a final in Brisbane in January, arguably the best match of the year so far in terms of its pure standard.

Simultaneous estimates usually are made using a pure standard vitamin preparation as a reference and the unknown food whose vitamin content is being sought; each test is repeated using two or more different amounts of both standard and unknown in the assays listed below.

Pure standard methyl esters were purchased from Sigma Aldrich, USA.

The retention times were determined using pure standard substances.

The conservative direct mail pioneer and activist Richard Viguerie predicted that the pack would continue to seek out a more ideologically pure standard-bearer this year than it did in accepting Senator John McCain as the Republican nominee in 2008.

In five out of the six assays, PCR efficiency was lower with pure standards than with environmental DNA samples.

The elaborated procedure reduces the number of standards to a minimum by using a standard containing a mixture of ions instead of a couple of pure standards.

To obtain accurate absolute quantification it is essential that PCR efficiency for pure standards is close to amplification efficiency for test samples.

We then analysed two pure standards of two different isomers (adenosine 3′- monophosphate and adenosine 5′-monophosphate monohydrate) individually and in a mixture in order to elucidate the elution profile of the isomers (Supplementary Figs. 148, 149).