The highest level of purification is achieved with our peptide-affinity chromatography, which is unmatched in producing high affinity and functional antibodies. We offer selection of mono-specific polyclonal antibodies by successive batch elution over multiple affinity matrices and phospho-specific antibodies by selectively isolating on phospho-peptide affinity columns. We also offer Protein A, G or L purification and cross-adsorption services. All purified antibodies are analyzed with ELISA and absorbance.