The SurPASS electrokinetic analyzer is a versatile, simple, and reliable system for solid surface analysis. The SurPASS electrokinetic analysis system provides information and clear presentation of results on surface chemistry, surface modification, and adsorption for various samples types and sizes. Surface charge is formed through contact with an electrolyte. Flow over the solid surface leads to charge separation. The charge separation results in zeta potential. This electrokinetic analyzer can help one understand and improve surface properties and develop specialized materials. Also, this fully automated surface analysis system ranges its applications in membrane, polymers, semiconductors, biomaterials, fibers, cosmetics, and detergent testing.