EI-106 Stack Sampler is a device used to collect samples of gases emitted from industrial stacks or chimneys. It is inserted into the exhaust stack or chimney from which emissions are being released and extracts a representative sample of the flue gas for analysis. The purpose of stack sampling is to analyze and measure the concentrations of various pollutants in the effluent gas stream. They often use filters or impingers to capture particulate matter or specific pollutants present in the gas stream. EI-106 Stack Sampler is an essential part of air quality monitoring programs, especially for industries that release pollutants into the atmosphere.