Abstract: A method of detecting designated products from a number of sources includes the step of applying (12) a unique code to each one of a plurality of products at a first location (14). The method also includes determining which of the plurality of products become designated. The method further includes the steps of recording the codes of the designated products, reading (26) the codes of products distributed at a second location (16) and comparing (28) the read codes with the recorded codes to determine if any of the distributed products are designated products. The invention also includes a system for detecting designated products.

Abstract: The present invention pertains to a method for casting metal between two casting surfaces (8, 10), such as a roll caster, by feeding molten metal (16) into the caster. A fine, uniform layer of carbonaceous material (32) is applied to the exterior of the casting surface (28) upstream of a casting zone (2). Thereafter, the molten metal is solidified as it passes through the casting zone (Z), and the gauge of the solidified metal is reduced at least 10%. The cast sleet (12) of this invention exhibits a uniform surface appearance.

Abstract: Viruses are detected by means of an immunoassay method in which an extended solid phase coated with antiviral antibody is employed to bind and remove virions from a specimen by forming an immuno-complex with antigens of said virions, a mobile solid phase comprising a dispersion of microspheres coated with the antiviral antibody is used to bind said microspheres to antigens associated with said immuno-complex, and the presence of bound microspheres is detected. The detection sensitivity is amplified by the ability to more readily detect the microspheres, which may be dyed or labelled. The extended solid phase advantageously may be in the form of a dipstick which can be easily contacted with the specimen. A virus detection kit provides the extended solid phase and mobile solid phases, each coated with antiviral antibodies.