Currently, I am using a static setup, which consists of a large glass jar with an electric fan at the bottom (for air circulation) and liquid volatile samples are injected through a septum in the jar lid. I'm detecting small organics, such as amines, alcohols, and benzene analogs. I am concerned about sample loss due to adsorption to the glass walls of the jar, so I'd like to move to a dynamic flow-chamber type of setup. My question is, what is the ideal setup, in terms of push vs. pull (pressure-driven carrier flow or vacuum) and chamber size/type (glass or Teflon, dimensions) and flow rate (~100 mL/min?). I need to get an apparatus going quickly and cost is a major factor.