sample="quota" bates="650565527" isource="bw" decade="1980" class="ni" date="19840328" March 28, 1984 Dr. Roy L. Prowse Group Research & Development Centre British-American Tobacco Company, Ltd. Regent's Park Road Southhampton, England S09 1PE Dear Roy: Here is a copy of B&W's standard procedure (SM-153) for the quantitation of magnesium and calcium in cigarette papers. As with our previous ion chromatographic methods, a DIONEX 2110i ion chromatograph, GILSON autosampler, and SPECTRA PHYSICS 4200 integrator were used. I have also included a copy of Harry Maynor's evaluation of a new anion fiber suppressor produced by DIONEX. This suppressor should be able to improve the method for organic acids in cigarette paper (SM-145) by stabilizing retention times. If you have any questions about these reports, please telephone me. Good luck. Sincerely, Rufus H. Honeycutt RHH/la/403 0278o Attachment