Compressed air collector NCAC-200 is used to determine the microorganism according to the specifications of the new GMP method and the microbiological detection for phytoplankton sampler is up to 50L/min, 100L/min. In the sampling process, the input gas is not wasted, and 100% of input gas is applied to the process sampling. The core components are imported from the original two compressed air collector and compatible gases used are helium(hr), argon(Ar) and nitrogen(N)