The Wasson-ECE Dynamic Blender is a simple, portable blending device that dilutes a sample or certified standard with a diluent gas of choice. The device contains a digital mass flow controller (MFC) that allows the diluent gas flow to be easily adjusted. An inert flow path and heated bridge eliminate adsorption and condensation issues when blending gas standards that include sulfurs, oxygenates, or other reactive analytes. The diluted mix is fed directly to a gas chromatograph (GC) sampling loop for analysis.

Gas chromatographic analyses often require multi-level calibration or low concentration standards. Some analytes are quite expensive or difficult to purchase at low levels due to reactivity, adsorption, or high molecular weights.