This paper presents the results of own studies based on the weight method, which compare capture effectiveness for filter materials used in some anti-dust face masks available on the Polish market in reference to real suspended dust PM2.5 occurring in ambient air. The research included popular filter materials used in anti-dust face masks (for everyday or industrial application) from the medium price range including both certificated materials (with or without activated carbon layer) of laboratory confirmed efficiency and anti-dust mask filters with undocumented effectiveness. The tests were carried out in the winter season in outdoor conditions on the roof of fifth-floor building with using referential dust sampler LVS-3 with PM2.5 inlet head working with air suction velocity of approx. 2.3 m3/h. A two-stage filtration system was used based on the tested filter (the first stage of filtration) and a high-efficiency final filter made of glass microfiber (the second stage of filtration). Sampling (dust collection) time was set in the range 24-48 hours depending on expected the tested filter efficiency and PM2.5 air concentration. As a result of the research it was found that the average effectiveness of the tested filter materials in terms of PM2.5 dust collection ranged from 89 to 99%. The highest effectiveness was obtained for thick filters used in industrial half-masks. Filter materials enriched in an activated carbon layer did not guarantee much higher efficiency of PM2.5 capture in comparison to similar filters without the activated carbon layer.