Concentrated aqueous buffer optimized for use with the following BPS Bioscience HSP90 assay kits:• HSP90α (C-Terminal) Inhibitor Screening Assay Kit #50317 384 rxns• HSP90β (C-Terminal) Inhibitor Screening Kit #50314 384 rxns• HSP90α (C-Terminal Domain) TR-FRET Kit #50261 384 rxns• HSP90β (C-Terminal Domain) TR-FRET Kit #50262 384 rxnsNote: This buffer is not designed for use with the HSP90 N-Terminal Assay Kits.