Repligen Corp. offers bioprocessing technology and solutions that are used in the manufacturing of biologic drugs. The Chromatography product contains a variety of products that are used for downstream purification and quality assurance of biological drugs. Manufacturers of biologic drugs can benefit from the Filtration products, which offer many advantages. They are able to produce large quantities of biologic drugs in pilot studies or commercial production. Protein A affinity ligands are the core of Proteins' product range. They are used in downstream purification for virtually all mAb-based drugs available on the market. Schimmel was founded in May 1981, and is based in Waltham MA.