Patent ID: 8366900

Claim:
A composition for separating analytes by capillary electrophoresis comprising: a sieving component comprising a non-crosslinked hydrophilic acrylamide polymer having a molecular weight (Mw) greater than about 3,000,000 Daltons (Da) and less than or equal to about 6,400,000 Da; and a surface interaction component comprising one or more non-crosslinked hydrophobic polymers selected from the group consisting of poly(meth)acrylamide, N,N-disubstituted polyacrylamide and N-substituted polyacrylamide, wherein said N-substituents are selected from the group consisting of C 1 to C 3 alkyl, halo-substituted C 1 to C 3 alkyl, methoxy-substituted C 1 to C 3 alkyl, and hydroxyl-substituted C 1 to C 3 alkyl; wherein the sieving component and the surface interaction component differ in polymer chemical composition; and wherein the composition does not include a crosslinked polymer gel.