The world ' s reference bioaerosol sampler is a multi - stage , multi - orifice cascade impactor designed to measure the concentration and particle size distribution of aerobic bacteria and fungi 世界標(biāo)準(zhǔn)的微生物采樣器是多級,多孔瀑布式撞擊采樣器。是為測量空氣中細(xì)菌和真菌微粒大小分布的濃度而設(shè)計(jì)。