CGA M-18:2018

The scope of this standard is the qualification of the change of grade process, which involves the conversion of a non-FDA/HC regulated compressed gas container to a FDA/HC regulated compressed gas container.
This standard also addresses the change of service between FDA/HC regulated products including from one pure gas or gas mixture product to another referring to the process details covered in CGA C-10. This standard also addresses the record keeping requirements for FDA/HC regulated gas COG and COS.
This standard does not apply to large cryogenic bulk storage containers or containers previously containing corrosive, poisonous, pyrophoric, radioactive, and toxic gases see Appendix A of CGA C-10.