title: Fractionation of carrier ampholytes for isoelectric focusing.
abstract: A simple method for fractionating synthetic carrier ampholytes is reported, based on the principle of continuous-flow isoelectric focusing in gel-stabilized layers. An 8% ampholyte solution, encompassing the pH range 3-9.5, is separated into 12 fractions in a chamber filled with Sephadex G-100 by a continuous-flow technique. We are thus able to obtain ampholytes of narrow pH range, encompassing approximately 2 pH units, whose resolving power is comparable with that obtained with commercial Ampholine covering similar pH ranges.
mesh_terms: D000818:Animals; D002417:Cattle; D002645:Chickens; D012085:Chymosin / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D006863:Hydrogen-Ion Concentration; D007525:Isoelectric Focusing / Q000295:instrumentation / Q000379:methods*; D009089:Mucor; D010434:Pepsin A / Q000032:analysis; D013552:Swine
chemical_list: D010434:Pepsin A; D012085:Chymosin