Matheson offers a product line of pure specialty gases. A variety of gases are offered, in different groups of products:Chemical GasesElectronic Pure GasesFree and Inert GasesHydrocarbonsRare GasesPure Gas Listing
This company offers a variety of pure product grades for each gas. They can custom purify and analyze most gases offered to meet any special requirements you may have.
They also can provide gas in numerous cylinder specifications.
Matheson Gas Products, 166 Keystone Drive, Montgomeryville, PA 18936. Tel: 800-416-2505. Fax: (215) 641-0656.