Abstract: We describe apparatuses, systems, method, reagents, and kits for conducting assays as well as process for their preparation. They are particularly well suited for conducting automated sampling, sample preparation, and analysis in a multi-well plate assay format. For example, they may be used for automated analysis of particulates in air and/or liquid samples derived therefrom in environmental monitoring.

Abstract: Apparatuses, systems, method, reagents, and kits for conducting assays as well as process for their preparation are described. They are particularly well suited for conducting automated analysis in a multi-well plate assay format.

Abstract: A variable resistance lifting mechanism for increasing the resistive force during an exercise stroke includes a lever arm pivotally attached to a frame at one end and slidably mounted through a linear bearing sleeve at a position remote from the pivot point. In one embodiment, the linear bearing sleeve is connected by a clevis pin to a housing slidable in a linear manner on guide bars. A bar secured to the housing is adapted to be attached to a predetermined number of weights. The weights are also slidable in a linear manner on the guide bars. In a second embodiment, the linear bearing sleeve is pivotally connected by the clevis pin directly to the bar adapted to the attached to the predetermined number of weights.