Method for sampling biological particles from fluid flow and method for manufacturing impactor

The present invention generally provides apparatus and methods for sampling, detecting and/or characterizing particles, e.g., by collecting, growing and analyzing active biological particles, such as microorganisms. The apparatus and methods of the present invention include particle samplers and impactors for collecting and/or analyzing the biological particles in the manufacturing environments requiring low levels of particles, such as clean room environments for electronic device manufacturing and sterile environments for manufacturing pharmaceutical and biological products, such as sterile pharmaceutical products. The apparatus and methods of the present invention comprise an integrated sampler and impact surface, such as a receiving surface for growth media, to minimize or completely eliminate risks associated with user handling, such as false positive determinations that occur due to contamination of the impact surface during particle sampling, growth or analysis processes. 本发明总体提供用于采样、检测和/或表征颗粒的设备和方法，例如