DIN 12542:1979-04

Действует

Laboratory ware made from fused quartz and fused silica; straight bore stopcocks made from fused quartz — 3 стр.

Ссылочные документы

DIN 7178-1:1974-12

Отменен

System of cone tolerances and cone fits for conical workpieces from C = 1 : 3 to 1 : 500 and lengths from 6 to 630 mm; system of cone tolerances — 10 стр.

DIN 12256:1977-05

Отменен

Laboratory glassware; tightness test of conical joints, spherical joints and stopcocks — 2 стр.