85206756
Dec 28, 2010
Samplers, impacters and collectors for dual sampling of gas and aerosol samples for particle measurement, particle collection, or measurement and collection of particles from air or gas samples for analysis, including source air or gas sampling machines either with fixed locations or portable devices for monitoring the quality of air or gas samples, collection of biological or particle samples in air or gas samples, or monitoring and collection of biological or particle samples in air or gas samples
Electrical and Scientific Apparatus