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RESEARCH AND~DEVELOPMENT', NEUCHATEL - QUAPtTERLY REDORT DIVISION . RESEARCH SUBJECT TITLE . ORION PERIOD COVERED : JULY - SEPTEMBER 1988 WRITTEN BY Pestlirn-S. (SAP) KEYWORDS . sidestream-smoke, ss, low-static-burning- rate, self-extinguishing, density OBJECTIVE To investigate the influence of filler density and cigarette paper on SS yield and'composition. RESULTS Ten prototypes [1] having,the same construction and'physical properties as prototypes of the Orion I series [2], 75C1, 083P, 085P, 087P and 089P [3], but with self-extinguishing and low static burning rate papers, respectively,,were analysed for their SS yield and composition. Compared with the results obtained for ORION 1 [2'], the values ebtainedfor the analysed prototypes do not follow the same pattern,, i.e. having a maximumiat a density of 225 mg/ml and a minimum at 275 mg/ml, but show a random pattern as the visibility andiparticulate matter data did [7]. Comparing the cigarette papers it was shown that the prototypes with WP60 paper gave by far the highest values for all parameters determined. The values of the self-extinquishing and low staticc burning rate paper were the same, within experimental error. P:nile the density does not seemito play such aniimportant role in sidestream smoke reduction:, when using se71f-extinguiishing or low static burning rate papers, the cigarette paper itself does. Using either one of those two papers the chemical sidestream smoke parameters, e.g. CO, NO, n~icotine, NH3, and HCN, were reduced by at least 50%, visibility and TPt-1 by 3'.00, compared to those obtained when using WP60.

RESEARCH AND~DEVELOPMENT, NEUCHATEL - QUARTERLY REPORT PLANS In~order to confirm the results obtained, all! 15 ORION prototypes will be analysediagain. REFERENCES [1i] Pestlin-S., pp. 27-28. [2] Pestlin S., pp. 46-51. [3] Pestlin-S., PP• 3'2-33. Quarterly Report ORION, April-June 1988, Quarterly Report ORION, October-December 1988, Quarterly Report ORION, July-September 1987, ~('7 -