Abstract: Embodiments of the invention provide liquid pump apparatus. The apparatus may comprise an immersion assembly comprising at least one immersion member having a liquid conduit provided therein along at least a portion of a length thereof, the immersion assembly being arranged whereby in use at least a portion of the immersion assembly is immersed in liquid to be pumped, the apparatus being arranged to provide a supply of gaseous fluid to liquid in the tank through the at least one immersion member at one of a plurality of vertically spaced apart locations of the assembly thereby to cause passage of liquid through the assembly from a liquid inlet aperture to a liquid outlet aperture of the assembly, the apparatus being configured whereby a location at which gaseous fluid is supplied to the immersion assembly is selected to be a location at which a head of pressure of liquid in the tank is within a prescribed range of values.

Abstract: In an aspect of the invention there is provided fluid pump apparatus comprising a plurality of ejectors, the apparatus having at least one motive fluid inlet arranged to supply motive fluid to the apparatus, at least one suction fluid inlet arranged to supply suction fluid to the apparatus and a common discharge outlet from which motive fluid and suction fluid that have passed through the ejectors may be expelled from the apparatus, each ejector having a respective injector portion and a respective diffuser portion, the injector portion being arranged to inject motive fluid from at least one said at least one motive fluid inlet into the diffuser portion thereby to draw suction fluid into the diffuser portion from at least one said at least one suction fluid inlet, the diffuser portion having a Venturi portion, each ejector having a respective flow stabilisation portion downstream of the Venturi portion thereof, the flow stabilisation portion being arranged to stabilise a flow of motive fluid and suction fluid

Abstract: Embodiments of the invention provide liquid pump apparatus. The apparatus may comprise an immersion assembly comprising at least one immersion member having a liquid conduit provided therein along at least a portion of a length thereof, the immersion assembly being arranged whereby in use at least a portion of the immersion assembly is immersed in liquid to be pumped, the apparatus being arranged to provide a supply of gaseous fluid to liquid in the tank through the at least one immersion member at one of a plurality of vertically spaced apart locations of the assembly thereby to cause passage of liquid through the assembly from a liquid inlet aperture to a liquid outlet aperture of the assembly, the apparatus being configured whereby a location at which gaseous fluid is supplied to the immersion assembly is selected to be a location at which a head of pressure of liquid in the tank is within a prescribed range of values.

Abstract: A holder for retaining a passive sampler and method of monitoring a user's exposure to a gas in ambient air using a passive sampler holder are provided. The holder includes a moisture-proof housing forming at least one hole in a first surface, and a moisture-proof, gas-permeable membrane position over the at least one hole to expose at least one compartment formed in the housing to accept a passive sampler to ambient air through the moisture-proof, gas-permeable membrane.

Abstract: A drink dispensing head incorporating a Venturi valve to utilize the motive force of a high pressure liquid to draw a low pressure liquid into the dispensing head without the need for a pumping means. A Venturi valve incorporated into a remote valve structure for adding a bonus flavor to a regular beverage dispenser without altering the existing valve structure.

Abstract: A drink dispensing head incorporating a Venturi valve to utilize the motive force of a high pressure liquid to draw a low pressure liquid into the dispensing head without the need for additional pumps.

Abstract: Please substitute the amended abstract below for the originally filed abstract: A drink dispensing head incorporating a Venturi valve to utilize the motive force of a high pressure liquid to draw a low pressure liquid into the dispensing head without the need for additional pumps.

Abstract: A drink dispensing head incorporating a Venturi valve to utilize the motive force of a high pressure liquid to draw a low pressure liquid into the dispensing head without the need for a pumping means. A Venturi valve incorporated into a remote valve structure for adding a bonus flavor to a regular beverage dispenser without altering the existing valve structure.