Laboratory glassware; Allihn condensers with standard ground jointsVerrerie de laboratoire; réfrigérant d'Allihn, a rodages interchangeables normalisés
DIN 12581:1976 history
1970DIN 12581:2022-08 Laboratory glassware; Allihn condensers with standard ground joints
1970DIN 12581 E:2021-12 Laboratory glassware; Allihn condensers with standard ground joints
1976DIN 12581:1976 Laboratory glassware; Allihn condensers with standard ground joints