International Standard
ISO 641:1975
Laboratory glassware — Interchangeable spherical ground joints
Reference number
ISO 641:1975
ISO 641:1975
Edición 1
1975-09
1975-09
© ISO 2024
International Standard
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ISO 641:1975
4771
No disponible en español
Publicado
(Edición 1, 1975)
Esta norma se revisó y confirmó por última vez en 2023.
Por lo tanto, esta versión es la actual.
Resumen
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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