Annual Rate Contract For Refilling Of Various Empty Gas Cylinders ( Nitrogen, Oxygen Etc, Gases , Nitrogen Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Oxygen Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Carbon-Dioxide Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Helium Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Hydrogen Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Argon Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Oxy-Acetylene Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Acetylene Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Sulphur Hexafluoride Gas , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity , Liquid Nitrogen , A ) 99 . 95% Purity , B ) 99 . 995% Purity , C ) 99 . 999% Purity
