Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1996-12-10
2000-05-02
Alexander, Lyle A.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
422 61, 422 99, 422100, 422104, B01L 314
Patent
active
060569247
ABSTRACT:
A modified test tube is provided which can sit on any flat surface unaided by a test tube rack. The modified test tube includes a tubular containment portion and tubular neck portion. The containment portion has a flattened bottom surface and a closed end. The neck portion is angled approximately 45.degree. relative to the flattened surface and has a mouth which opens parallel to the flattened bottom surface. The flattened bottom surface of the modified test tube enables the test tube to sit prone on any flat surface by itself, unaided by a rack, and the bent neck portion prevents the contents from spilling from the test tube. This design enables the contents within the test tube to be easily monitored without moving the test tube. A test tube rack is further provided for storing the test tubes. The test tube rack is generally a substantially solid transparent cylindrical member having a plurality of radial cavities, spaced such that each does not intersect another, or a plurality of holes in the thick walls of a transparent tubular member. The cavities or holes may be arranged into several horizontal levels.
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VWR Scientific catalog, p. 210, showing Nunclon.TM. .gradient. flat sided and culture tubes. No Date Provided.
Corning Glassware catalog, 1995, p. 265, showing tube with flat window and showing tube with sidearm.
James W. Queen and Co. catalog, circa 1875, pp. 22-23, showing side neck test tube and ignition tube.
Barajas Jenny A.
Jackson Milton L.
Alexander Lyle A.
Gallagher Thomas A.
Gordon David P.
Jacobson David S.
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