For the development of potentially reduced exposure products ('PREPS'), there is a demand for a quick and inexpensive pre-check methodology to access the effect of potential filter additives on certain constituents of mainstream cigarette smoke. In this work a simple model reactor for this purpose is described that generally allows an estimation of the performance of filter additives towards selected Hoffmann Analytes (nitriles, aldehydes, ketones, aromatics) in mainstream cigarette smoke - without preparing cigarette test pieces. The effect of a series of inorganic and organic polymers on the level of 20 vapour phase constituents is demonstrated for a monitor cigarette on a 12 mg/cig. tar level. For this methodology, total cigarette smoke is passed through a layer of the respective filter additive and is sampled using a glass syringe. An aliquot is subsequently analysed by GC-FID. Physical characteristics of the materials are given and the effects observed will be briefly discussed on a molecular basis (e.g. adsorption and/or interaction of total cigarette smoke with reactive surface centres). The methodology described is applicable for linear and rotary smoking machines.