Producer of avidin derivatives  (CAS Number : 1405-69-2), e-Proteins supplies a pure, homogeneous, certified and stable avidin derivatives for diagnostics industries  with the guarantee of highest quality throughout research and commercialization programs of its clients’ products. Poly – lite avidin offers a higher performance thanks to its multi layers form when Neutralite avidin (avidin free sugar) offers a better signal because its removed sugar. All products are issued from hens white eggs produced in Europe. On demand , our products can be produced and certified endo-free.