質(zhì)量標(biāo)準(zhǔn): pharmalyte carrier ampholytes,prepared by the co-polmerization of glycine,glycylglycine amines, and epichlorohydrin,are available in five broad- range and four narrow-rang pH intervals.Each interval contains numerous ampholytes with a high buffering capacity per pH unit.Pharmalyte carrier ampholytes form an exdtremely stable linear pH gradient exhibitingeven conductivity across the gel.For precast PhastGel gels for PhastSystem,