1998 Edition, April 10, 1998
Standard Specification for Glass Stopcocks with Polytetrafluoroethylene (PTFE) Plugs
Includes all amendments and changes through Reapproval Notice , 2015
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Description / Abstract:
This specification covers standard dimensional requirements for
obtaining, within practical limits, interchangeability in glass
stopcocks (Note 1) with polytetrafluoroethylene (PTFE) plugs for
ordinary laboratory and industrial applications. It covers
dimensional interchangeability only and does not involve design
characteristics of the item except where specified, nor does it
involve physical or chemical characteristics of the material used.
It does not cover glass stopcocks with glass plugs (Note 2) or
stopcocks intended for use in high-vacuum work.