Abstract
The reliability with which an external reference sample can be used to standardise the intensities of Raman scattering spectra is assessed. By comparing the ratios of single band intensities of Raman scatter in a two component liquid mixture with those between the mixture and an external standard it is shown that the latter is more than adequate for most quantitative Raman analysis. Coefficients of variance in repeated experiments on the same sample are ∼1%, when comparing single band heights on spectra recorded with modest laser powers over 2 min. When using the whole spectrum, these coefficients are significantly lower.
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