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ISO 641:1975

Laboratory glassware -- Interchangeable spherical ground joints

General information
Valid from 01.09.1975
Directives or regulations
None
Standard history
Status
Date
Type
Name
01.09.1975
Main
The requirements deal with the geometric charateristics to ensure interchangeability. The dimensions of the joint-ground zone and the outer diameter of the tube connected to the joint are given in a table and illustrated in a drawing. In addition the surface finish is specified. A system of gauges (stell balls) for testing the ball cup is tabled. In the annex a method of testing the leakage including the apparatus is described.
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