Strep-tag regeneration buffer with HABA

Contains HABA (2-[4'-hydroxy-benzeneazo]benzoic acid) which displaces desthiobiotin at the biotin-binding site regenerating Strep-Tactin. The yellow HABA solution turns red when desthiobiotin has been removed from Strep-Tactin clearly indicating the regeneration process and activity status of the column.