The Alcohol and Tobacco Tax and Trade Bureau (TTB) is proposing amendments to the TTB regulations under the Internal Revenue Code related to authorized wine treating materials to replace numerical limitations on the use of certain wine treating materials with "good manufacturing practice” as the limitation instead, where the treating material does not pose health concerns.  The proposed amendments, if finalized, would provide more flexibility to industry members.  The proposed amendments also include authorizing additional wine treating materials and processes in response to industry member requests.  Amending the regulations to specifically authorize wine treating materials increases the acceptability in export markets of wine produced using those materials and processes.