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  1. Bull. Spec. CORESTA Congress, Harare 1994, p. 152, ST 1

    Microbore capillary gas chromatographic determination of 'semi volatiles' and its use in efficiency measurements of carbon filters

    SHEPHERD R.J.K.; CLARKE P.F.; DUNN M.; TAYLOR M.J.
    FIL International Limited, Filtrona Court, Harpenden, Hertfordshire, UK
    The term 'semi volatiles' is used to describe the partially volatile fraction of the particulate phase of smoke and is generally considered to include compounds with boiling points up to 250-300°C. This fraction includes acidic, basic and ...
  2. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 79, ST5, ISSN.0525-6240

    The effect of ventilation on the vapour phase retention of various carbon filters

    TAYLOR M.J.; CLARKE P.F.; DUNN M.; GRAHAM J.F.; SHEPHERD R.J.K.
    Filtrona Technology Centre, Jarrow, Tyne & Wear, UK
    The continuing trend to lower cigarette yields and to modify cigarette taste have lead to an increasing use of ventilation and granular adsorbent additives in cigarette filters. In a non-ventilated cigarette, smoke is generally fairly evenly distributed ...
  3. Bull. Spec. CORESTA Symposium, Kallithea, 1990, p. 102, ST01, ISSN.0525-6240

    Measurement of the performance of some new vapour phase active filters by an improved gas chromatographic method

    DUNN M.; GRAHAM J.F.; SHEPHERD R.J.K.; TAYLOR M.J.
    Filtrona International Limited, Jarrow, Tyne & Wear, UK
    The increasing world-wide interest in the use of cigarette filters using granular adsorbents has lead to the need for a rapid method to measure the activities of such materials in cigarette filters. Previously, the vapour phase activity of filters was ...