Profile: Activotec provides a complete range of peptide synthesizers and services for peptide & protein synthesis. We offer conjugation of peptides to a variety of immunogenic carrier proteins and gel for use as immunogen or for affinity purification. A variety of immunogenic carrier proteins such as keyhole limpet hemocyanin (KLH) and diphtheria toxoid has been use in conjugation with several conjugation chemistry. KLH is often used since there is no cross-reactivity with reagents used in subsequent ELISA or western blot experiments. We also provide coupling of peptide to various types of gel to create an immunosorbent, for positive or negative selection of macromolecular binding entries, such as antibodies.