DEFSTAN 68-75/2(1993) : 1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
06-30-1995
01-12-2013
Gives the requirements, including essential purity and dryness for oxygen, air or any Heliox or Nitrox mixture supplied under pressure in cylinders for diving.
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