This publication,along with IEEE/ASTM SI 10, American National Standard for Metric Practice and CSA-Z234.1,Metric Practice Guide,govern when metric or SI units of measure are used for: all gases sold and used by the compressed gas industry whether in gaseous or liquid form at the point of sale or use; all vessels,cylinders,and other containers used for packaging, storage,and transportation of these gases; and all ancillary equipment included in the sale and use of these gases [1,2].
This publication does not apply to units of measure when metric or SI units are not used.