Laboratory glassware -- Straight-bore glass stopcocks for general purposes

رقم المستند: NL ISO 4785 : 2009
القطاع: chemical Technology
TC: NL TC 48
ICS: 71.040.20
This International Standard specifies requirements and dimensions for two series of glass straight-bore stopcocks for general-purpose use. The stopcocks are defined by their nominal (bore) diameter and large end diameter and length of the ground zone. It is recommended that, in national standards, only one of the series should be specified. NOTE — Annex A lists additional International Standards for other general-purpose laboratory glassware.