3d image of bis-tris buffer skeletal formula

bis-tris buffer cell culture medium chromatography electrophoresis protein purification buffering agent biochemistry ph buffer solution hydrogen ion capacity mixture acid base zwitterion biological gel sample nmr spectroscopy x-ray crystallography bicinchoninic biochemical research biological exemplar running substance matter material compound component stuff reagent functional group precursor synthesis reaction production building block molecule molecular formula skeletal structural structure geometry 3d