Printer manufacturers are required to meet a number of environmental standards for materials utilized in their products and the emissions of those products in a work place environment. Legislative compliance, such as ROHS and California Proposition 65, establish the maximum allowable amount of controlled substance, or maximum exposure of a released substance within a work place air space. These demands have filtered down to the vendors of components used in the printer. This requires that component manufactures verify that their products do not contain, nor emit into the working environment, substances exceeding compliance regulations. In order to meet these requirements, testing at the temperatures that the component sees, in an operating printer, needs to be completed and the results compiled to determine environmental compliance. Environmental compliance testing protocols and testing equipment used for identifying and quantifying emissions, dynamic “headspace testing”, of fuser and pressure rollers at operating temperatures are discussed. Particular attention is given to benzene, toluene ethylbenzene, xylene (BTEX compounds), acetaldehyde and formaldehyde.