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ISO 641:1975

Laboratory glassware -- Interchangeable spherical ground joints

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Kehtiv alates 01.09.1975
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Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
01.09.1975
Põhitekst
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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