RT Journal Article SR Electronic T1 Non-Destructive Headspace Gas Analysis in Pharmaceutical Amputes by 5145 A Lasar Raman Spectroscopy JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 127 OP 133 VO 34 IS 2 A1 Bailey, GLEN F. A1 Moore, Herbert A. YR 1980 UL http://journal.pda.org/content/34/2/127.abstract AB A method has been evaluated for non-destructive analysis of the gas headspace in ampuls. We determined with a Raman spectrometer the rotational spectra of the headspace gas in a series of ampuls purged with known O2/N2 mixtures, and the relative rotational scattering coefficients for O2 and N2 at atmospheric pressure. Calculated O2 concentrations were in excellent agreement with the known composition of the purge gases. The method is safe. sensitive, objective. universally applicable. and could be adapted to total-inspection quality control in automatic or semi-automatic industrial settings.