Abstract: The present invention relates to an apparatus for use in an assay comprising: (a) at least one first receptacle comprising a fluid inlet and a fluid outlet, (b) a porous membrane, and (c) at least one analyte-specific binding agent, characterised in that said at least one analyte-specific binding agent is immobilised on the underside of said porous membrane relative to the fluid inlet; and to methods of performing said assay.

Abstract: A support belt, particularly adapted for weight lifting users, includes a strap mounted to the main belt. A ratchet mechanism is mounted to one end of the strap. The other end of the strap is inserted through the ratchet mechanism and folded upon itself and secured to itself to form an anchor location. Another anchor location is a portion of the strap which is permanently secured to the belt. When the ratchet mechanism is operated the first end of the strap becomes wound on a take up reel in the ratchet mechanism to pull the two anchor locations toward each other and tighten the belt. In order to have a quick release of the belt the free end of the strap is detached from its engagement to itself so that its anchor location is thereby disengaged.

Abstract: In a biological film module for wastewater treatment system, a frame for supporting porous biological-growth support media is provided with at least one pontoon float. Also disposed on the frame is an aerator in the form of a removable diffused aeration grid including a plurality of individual diffusers disposed in a rectangular planar array.