CGA M-18

Standard for the Change of Product and Change of Grade for High Pressure and Refrigerated Liquid Containers

Compressed Gas Association , 08/26/2022

Publisher: CGA

File Format: PDF

$17.00$35.00


The scope of this standard is the qualification of the change of grade (COG) 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 COS 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 addresses high pressure cylinders including tube trailers and cryogenic liquid containers.

This standard does not apply to liquid bulk trailers, or large cryogenic bulk storage containers. This standard also does not apply to containers previously containing corrosive, poisonous, pyrophoric, radioactive, and toxic gases.

CGA M-18 History

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CGA M-18

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