The invention relates to the atomization of liquids. There are many fields of application where a spray mist or jet of fine droplets is required and where control over droplet size is important. Of particular significance is the medical field and the nebulizing of a drug to be administered to a patient by the inhaled route, where the deposition of the drug and its efficacy is a direct function of the droplet size. The object of the invention is to improve the control over droplet size, an object...

In photographic processing apparatus, different processing solutions are normally contained in separate tanks, the material being processed as it passes from one tank to another through the required processing stages. This means that the apparatus needs to have a tank for each solution which is required for a particular process. Described herein is an arrangement in which more than one processing tank may be provided in a single container. The arrangement comprises tray which is divided into two...

A metering system 10 for metering liquid to be supplied to equipment which utilizes the liquid to generate a predetermined product includes a body member 12 which defines a chamber 14 therein, the body member 12 being mountable in a predetermined position relative to the equipment and liquid to be metered being received in the chamber 14. A discharge element is arranged in communication with the chamber of the body member, the discharge element comprising a first discharge element 16 through whi...

A process for decontaminating oils and synthetic liquids containing polychlorobiphenyls comprising passing the liquid through a catalytic bed at an elevated temperature. The catalytic bed comprises a carrier and one or more active metal compounds selected from the group consisting of compounds of nickel, copper, molybdenum, tungsten, and chromium.

A device for aerating liquids in containers is described, which may particularly be useful for the aeration of wines before consumption. The device comprises a base element to rest on the container, a tube attached to the base element and depending into the container, and means defining a variable volume above the base element and communicating with the tube. The device operates by manual expansion of the variable volume means, which preferably comprises a cylinder, the base element comprising a...

A dielectric liquid is provided comprising (a) a fluorinated, inert liquid, or a mixture of fluorinated, inert liquids and (b) a fluorine-containing, nonionic sulfonate ester or sulfonamide, such that the dielectric liquid has a dielectric constant intermediate or between that of component (a) and component (b) and the dielectric constant represents the relative amounts of the relatively lower dielectric constant of the fluorinated, inert liquid per se and the relatively higher dielectric consta...

A liquid treatment installation comprises apparatus for controllably treating a liquid with a liquid treatment substance. The apparatus comprises a body, a container for a liquid treatment substance in the body, and a removable closure member on the body. The installation also includes a liquid supply conduit connected to the liquid inlet of the apparatus, a liquid discharge conduit connected to the liquid outlet of the apparatus, and level control means for maintaining the liquid level in the c...

An apparatus is set forth for removing a sample of a liquid for chemical analysis from a vessel containing the liquid and for delivering the sample into a sample bottle. The apparatus comprises a hollow member defining an enclosed plenum. A sample bottle attachment structure defines a passage communicating with the plenum and being adapted for attachment to a top portion of the sample bottle. A first partition structure blocks off the passage other than where it communicates with the plenum. A l...

Liquid is cooled in a columnar vessel having an inlet and an outlet for the liquid. The cooling is effected by introducing liquid cryogen into the vessel through a pipe. The liquid cryogen vaporizes and crates turbulence in the liquid in the vessel. Perforated plates dampen the turbulence and disengage the vaporized cryogen from the liquid being cooled. Pressurized gas is introduced from an inlet into the liquid beneath the liquid cryogen. This pressurized gas crates turbulence in the region whe...

Liquid delivery apparatus includes a container 138 for the liquid, the container 138 having a liquid outlet 150 for dispensing the liquid and a vent hole 53 for admitting air to the container 138 to replace dispensed liquid. The vent hole 53 is closed by a closure element 56 which is removable to expose the vent hole 53. When fitting the container 138 to a delivery device 2, the closure element 56 engages the delivery device 2 so as to remove the closure element 36 automatically to cause the ven...