Sentence examples for authentic standards from inspiring English sources

Authentic standards were purchased from Sigma-Aldrich, Fluka, and Merck.

Identification was based on comparison with authentic standards.

The spots were identified with simultaneous running of authentic standards.

Enantiomers of 3-amino tetradecanoic acid, the amino acid of epichlicin, were synthesized as authentic standards.

Retention times and MS chromatograms of all flavonoids and saponins were confirmed by authentic standards, respectively.

Moreover, the absolute contributions of oxidation and conjugation to clearance cannot be measured without authentic standards.

Appropriate authentic standards viz., tristearin, phosphatidylcholine and sphingomyelin were chromatographed on each plate.

Peaks were identified using authentic standards of the corresponding fatty acid methyl esters (Sigma-Aldrich).

All identified products co-eluted and shared their UV vis spectra with authentic standards.

Identification is based on retention times and on-line spectral data in comparison with authentic standards.

Eluted substances were recorded at 220 nm and identified/quantified by means of authentic standards.