Evaluation of Glass Dissolution Vessel Dimensions and Irregularities

This paper reports on studies of the geometric dimensions and irregularities in the surface of standard 1-L glass dissolution
vessels. Eleven sets of six dissolution vessels from 10 commercial sources were selected for study. A three-dimensional
coordinate measuring machine (CMM) was used to obtain results. The geometric dimensions studied were height,inner
diameter of the cylindrical portion of the vessel,and radius of the hemispheric region. The following irregularities of the
flange and of the internal surface of dissolution vessels were quantified: (1) flatness of the vessel flange,(2) roundness of
the hemisphere at the base of the vessel, required to ensure smooth,unperturbed media flow, (

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