An apparatus for use in association with a vehicle having a windshield includes a module having an end portion which pivotally engages a bracket connected with the windshield. Each module performs a pre-defined function, and when included in a monitorcontrol network operates as a node on the network and automatically communicates with one or more connected nodes using a uni-directional packet-based protocol. The emulsion-breaking additive can be native to the process stream. The novel compounds of the invention can be employed in a wide variety of compositions. Next, the embedded sample is oriented in such a way that its working surface is presented. A valve may be mounted in the air inlet portion of the insert.