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mensional tolerances, the required fit of mating gages with reference to each other, and fit of the finished product in working gages. The universal taper for all interchangeable ground glass joints, stopcocks, and stoppers is I to Io, the specified length of the ground zone varying with the product. A complete set of master gages is maintained by the industry at the Bureau for reference.
The success of the commercial standard for interchangeable ground glass joints, CS2I-3O, led the standing committee to extend the principle of interchangeability to stopcocks and stoppers. While the details of the specification have been carefully formulated, they may be considered for a period of time as on trial and su.bject to revision to suit composite experience. The personnel of the standing committee is given in the printed pamphlet together with a list of acceptors and a brief history of the project.
Interchangeable ground glass joints, stopcocks, and stoppers are identified by the letters "ST" entwined as a symbol on each member, followed by the size number and trade mark of the manufacturer.
π SIMILAR VOLUMES
Astarita, G., Probletni di ingegneria chimica relativi a fluidi non-Newtoniani. Chim. Ind. Milan 44.910-914. Astarita, G. and Marrucci, G., Moto di una bolla di gas in un liquid0 non-Newtonian0 a legge di potenza.