Modified sloping test tube

Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition

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422 99, 422104, B01L 300

Patent

active

058583106

ABSTRACT:
A modified test tube is provided which can sit on any flat surface unaided by a test tube rack. The modified test tube is an elongate, substantially tubular member having a containment portion coupled to the neck portion. The containment portion has a bottom surface and a closed end. The neck portion is angled relative to the flattened surface and has a mouth. A sloped surface is provided at the interior of the tubular member coextensive with the flattened surface. The 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.

REFERENCES:
patent: D296928 (1988-07-01), Lee et al.
patent: 1312340 (1919-08-01), Mojonnier
patent: 1660974 (1928-02-01), Porro
patent: 2288065 (1942-06-01), Benotti
patent: 2625823 (1953-01-01), Erickson
VWR Scientific catalog, p. 210, showing Nunclon.TM. .increment. flat sided and culture tubes.
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.

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