Besides modulating electroosmotic flow, capillary wall coatings can also serve the purpose of reducing interactions between "sticky" analytes (such as proteins) and the capillary wall.
Ademais de modular o fluxo electroosmótico, os recubrimentos da parede capilar poden tamén servir para reducir as interaccións entre os analitos "pegañentos" (como as proteínas) e a parede do capilar.