Table 4.23 Buffers commonly used in capillary electrophoresis
Name pKa
phosphate 2.12 (pKa1)
citrate 3.06 (pKa1)
formate 3.75
succinate 4.19 (pKa1)
citrate 4.74 (pKa2)
acetate 4.75
citrate 5.40 (pK
a3)
succinate 5.57 (pK
a2)
MES 6.15
ADA 6.60
BIS-TRIS propane 6.80
PIPES 6.80
ACES 6.90
MOPSO 6.90
imidazole 7.00
MOPS 7.20
phosphate 7.21 (pKa2)
TES 7.50
HEPES 7.55
HEPPS 8.00
TRICINE 8.15
glycine amide, 8.20
hydrochloride glycylglycine 8.25
TRIS 8.30
BICINE 8.35
morpholine 8.49
borate 9.24
CHES 9.50
CHAPSO 9.60