当复合物表面总的负电荷与周围基质的电荷密度一不能致时，与典型的稳态分离技术相似，sds-蛋白复合物则不再迁移而保持固定。

• As the total negative surface charge of such complexes matches the surrounding charge density of the matrix, the SDS-protein complex stops migrating and remains stationary, as typical of steady-state separation techniques.