This article presents paraffin oil mist penetration tests of commercially available air-purifying respirators of different construction conducted using the method described by Standard No. ISO 16900-3:2012, which incorporates flow rates (up to 255 l/min) of test aerosol. The testing method reflects differences in work intensity during the use of respirators. Moreover, the experimental stand, designed according to the international specifications, is described. The results show that the higher the paraffin oil mist flow rate, the higher the penetration index, irrespective of the testing method used and the type of respirator investigated. While at high flow rates, filtering half masks of the first protection class (FFP1) met the requirements of their protection class according to European Standard No. EN 149:20001+A1:2009, filtering half masks of the second and the third protection class (FFP2 and FFP3) did not.

本文介绍了使用标准号 ISO 16900-3:2012 中描述的方法对不同结构的市售空气净化呼吸器进行的石蜡油雾渗透测试，该方法结合了测试气溶胶的流速（高达 255 l/min）。该测试方法反映了呼吸器使用过程中工作强度的差异。此外，还介绍了按照国际规范设计的实验台。结果表明，石蜡油雾流速越高，穿透指数越高，与所使用的测试方法和所研究的呼吸器类型无关。在高流速下，第一级防护等级 (FFP1) 的过滤半面罩符合欧洲标准号 EN 149:20001+A1:2009 的防护等级要求，