DEFSTAN 68-75/1(1983) : 1983 AMD 1
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
BREATHING GAS PURITY FOR DIVING
04-23-1993
01-12-2013
Criteria including essential purity and dryness for oxygen, nitrogen, helium, air or gas mixtures supplied under pressure in cylinders for diving.
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.