Good's Buffer Data

Buffer pKa1 pKa2
TEEN 6.54(1) 9.84(1)
DEPP 4.67(3) 8.83(2)
DESPEN 5.75(3) 9.37(2)
PIPES 2.81(1) 6.77(1)
PIPPS 3.73(7) 7.96(13)
PIPBS 4.39(2) 8.74(1)
MES 6.19(2) n/a
MOPS 7.09(6) n/a

All data were taken from "Avoding Interferences from Good's Buffers: A Contiguous Series of Noncomplexing Tertiary Amine Buffers Covering the Entire Range of pH 3-11", Q. Yu, A. Kandegedara, Y. Xu, D.B. Rorabacher, Anal. Biochem. 253, 50-56 (1997).