“…Zone detection with electrochromatography is not significantly different from that in chromatography (S3, 121, 126, 411), but recovery of separated substances from gels (136,383,404) mon pH buffers. Designed for use with biochemical substances, a number of these buffers are salts of strong bases and weak acids or of strong acids and weak bases (136, 404, 424)• These buffers show rapid change of pH at the electrodes when employed as background electrolytic solutions.…”