Abstract: A support bar for adjustably mounting accessories such a theatrical lamps wherein the bar is preferably formed of extruded aluminum and the bar is hollow with a closed interior electrical raceway for electrical cables extending the length of the bar and is isolated from a quadrilateral opening extending the length of the bar that communicates with the quadrilateral opening and the exterior of the bar. Adjustable mounting means extend from the lamps into the quadrilateral opening to mount the accessory and to allow sliding movement thereof within the bar.

Abstract: An apparatus for the collection of volatiles includes a housing that forms an environmental chamber. Dishs of test sample are placed in this chamber which is closed with a transparent cover. A gasket assures an airtight seal between the cover and the housing. The housing is supported on a stand that allows the angular orientation of the housing to be adjusted relative to the path of the sun. A jacket is also formed in the housing about the environmental chamber. A heat exchange fluid is circulated through this jacket to maintain the environmental chamber and, thus, the test sample within a desired temperature range. Volatiles emitted by the test sample are collected by circulating air through the environmental chamber. This air which passes across the test sample dishes serves to sweep up the volatiles which are then delivered to a collection trap for qualitative and quantitative analysis.

Abstract: An apparatus for the collection of volatiles includes a housing that forms an environmental chamber. Dishes of test sample are placed in this chamber which is closed with a transparent cover. A gasket assures an airtight seal between the cover and the housing. The housing is supported on a stand that allows the angular orientation of the housing to be adjusted relative to the path of the sun. A jacket is also formed in the housing about the environment chamber. A heat exchange fluid is circulated through this jacket to maintain the environmental chamber and, thus, the test sample within a desired temperature range. Volatiles emitted by the test sample are collected by circulating air through the environmental chamber. This air which passes across the test sample dishes serves to sweep up the volatiles which are then delivered to a collection trap for qualitative and quantitative analysis.