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Norm
ISO 641:1975
Issue date: 1975 09 01
Laboratory glassware — Interchangeable spherical ground joints
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...
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Valid
Publisher:
International Organization for Standardization
Format:
Digital | 5 Pages
Language:
English
ICS
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.