Abstract: The present invention relates to an aerosol dispensing apparatus, more particularly to aerosol dispensing valves incorporating a controlled metered dispensing function wherein the metering chamber holding the next aerosolized dose is in fluidic communication with the reservoir allowing homogenous mixing of the next aerosolized dose to be dispensed.

Abstract: There is described a unique instrument system employing a laser, having a polarized and collimated beam of radiation, which is split into a multitude of primary and secondary beams containing the same desirable properties of high collimation and monochromaticity. The secondary beams are used to measure simultaneously multiple antigen-antibody (Ag-Ab) agglutinations reactions involving latex particles.

Abstract: An aerosol dispenser dispenses the contents of a metering chamber by depression of a slidable stem which extends through the metering chamber and into the main fluid reservoir of the dispenser. The stem includes a dispensing passage which lies within one of a pair of chamber sealing sleeves when the stem is in a rest position, thus fluidically isolating the exterior of the apparatus from the metering chamber. In this position, the metering chamber and the main reservoir are also fluidically isolated from each other. After shaking the dispenser to mix its contents, i.e., an active agent and propellant, the stem is then depressed into a charging position in which the dispensing passage is placed into engagement with an additional sealing sleeve mounted within the metering chamber to fluidically isolate the metering chamber from the exterior of the dispenser.

Abstract: There is disclosed herein a novel spectral background corrector system which, by employing light refracting techniques, causes wavelength scanning or modulation which allows substantial elimination of spectral background.

Abstract: A dual wavelength spectrophotometer for ampoule content inspection, in particular for ampoule leak detection wherein leaks are initially "flagged" via the dye bath immersion technique. Light transmitted through the ampoule is received by a bifurcated fiber optic cable providing via a random mix arrangement substantially identical ampoule optical signature signals. Each is directed through preselected interference filters, chosen on the one hand on the basis of the dye being used and the glass ampoule and its contents on the other hand. Associated with the filters are respective photodetectors, the output signals of which are connected to a difference amplifier stage. The output (if any) of the latter is compared to a preestablished (dye) threshold signal, which represents the minimum level (of dye) from which to effect a reject status. The ampoule contents or a particular component thereof may also be investigated in this manner.

Abstract: Use of an improved water-swellable carboxymethylcellulose paper in a unique pharmaceutical unit dosage form comprising a stack of edible webs laminated at the edges at least some of which are paper is described. The subject paper is a superior delaminating agent in said unit dosage forms.