Independent analytical testing. Results apply only to the sample received, for research use only.

Canada Peptide Testing

Raman spectroscopy

Seen on identity assessments.

Definition

Measurement of the small frequency shifts in light scattered by a sample, which report on the same molecular vibrations infrared absorption does but under different selection rules. Bonds that respond weakly in infrared often respond strongly in Raman, which is why the two are read together rather than as alternatives.

Related terms

About identity confirmation

The spectroscopic techniques an identity conclusion is built from, and what each of them can settle.

Diode-array detectionCapillary electrophoresisUV-Vis spectroscopyConfirmatory testing

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