Abstract: Apparatus for separating contaminant from water, the contaminant being of lower density than water. The apparatus comprises a settlement chamber, initial separating means, and an entry port for introducing the liquid to be separated into the initial separating means for flow therethrough into the settlement chamber. A contaminant outlet opens from an upper region of the settlement chamber. A pump intake is located towards the lowermost part of the settlement chamber, and feeds a pump. The outlet from the pump is directed to a molecular separation filter capable of separating water from contaminant. Water discharges from the molecular separation filter, and can be further treated by an optional activated carbon filter. Contaminant leaving the molecular separation filter is directed back into the initial separating means.

Abstract: Apparatus for separating oil from an oil/water mixture. The mixture is introduced into a vessel through entry ports and passes through a coalescing filter, flowing therethrough into a settlement chamber. Separation of oil and water occurs in the chamber and oil flows therefrom through an outlet to a waste collection vessel. Water is taken from the lower part of the chamber through a pipe and passes through a sorbent bed prior to discharge through an outlet located at a level below the level of the oil outlet opening.

Abstract: A composition and method for treating a wound or surgical incision, by sustained-released delivery of epidermal growth factor (EGF). The composition includes a high-viscosity aqueous dispersion of negatively charged liposomes with liposome-entrapped EGF. The EGF/liposome composition is formed, in one embodiment of the invention, by suspending a lipid mixture typically containing equimolar amounts of neutral and negatively charged phopholipids and cholesterol in a low-conductivity aqueous medium containing EGF and a zwitterionic compound whose isoelectric point is between pH 5.5 and 8.5 to form a gel-like composition. One embodiment of the invention contains EGF entrapped by surface adsorption to the liposomes, for slow release from the composition.

Abstract: A filter element comprises a relatively rigid fluid-permeable cylinder (5), around which is provided a body (7) of non-woven fibrous filter material. A jacket (6) of permeable material is positioned around the outer surface of the filter material, and is heat-shrunk onto the filter material in order to hold this under substantially uniform radial compression over the whole of its area.

Abstract: A filter pack comprises a first housing member (1) having an inlet port and an outlet port (4) for compressed air; the outlet port being connectable to a piece of equipment, for example a spray gun. A second housing member (6) is removably fitted into the first housing member through an opening (5) therein and has a section (8) protruding from the opening. A retaining ring (12) releasably secures the two housing members together. The second housing member is at least partially filled with activated carbon filter material (18). A wall area (19) of the second housing member is formed with an inlet into the interior thereof, and the wall area combines with part of the first housing member to form a chamber (15) in communication with the inlet and outlet ports. The protruding section (8) of the second housing member has an outlet (9) for connection to an airline, the flow path from the inlet port to the outlet of the second housing member being through the chamber and then through the filter material.

Abstract: Apparatus for removing entrained liquid from a gas stream comprises a cylindrical casing (67) designed to be mounted so that its axis is substantially vertical. An inlet port (62) and a gas outlet port (63) are provided adjacent to the upper end of the casing and drain means (80) are provided at the lower end of the casing whereby separated liquid may be drained therefrom. A gas outlet tube (75) coaxial with the inner surface of the casing, extends downwardly from the upper end thereof, the outlet tube communicating at its upper end with the gas outlet port (63). A plurality of baffles (72) are arranged in an annulus around the outer surface of the outlet tube (75), the baffles being located downstream of the inlet port (62) and shaped to impart a spinning movement to the incoming gas stream. An impingement plate (77) is located downstream of the baffles and has an upper surface extending transversely across the path of the air stream leaving the baffles.