Literature Cited
- American Society of Brewing Chemists. Methods of Analysis, 14th ed. Beer-23A Bitterness Units (BU), Beer-23B Iso-α-Acids (IAA), Beer-23C Iso-α-acids by solid-phase extraction and HPLC, Statistical Analysis-3 Ruggednes Testing, Statistical Analysis-4 Youden Unit Block Collaborative Testing Procedure. The Society, St. Paul, MN, 2013.
- American Society of Brewing Chemists. Report of Subcommittee. Isomerized alpha acids in beer by solid phase extraction and subsequent spectrophotometric measurement. Spring report 2012.