Pfanstiehl L-Arginine, High Purity, Low Endotoxin, Low Metals is a multi-compendial amino acid that has been specifically designed and formulated to remove impurities such a endotoxin, trace metals, and nitrosamines. Manufactured in the USA under ICH-Q7 cGMP conditions, Pfanstiehl L-Arginine meets parenteral (injectable) excipient grade standards, making it ideal for pharmaceutical, biologic, and vaccine bioprocessing and formulation. Pfanstiehl L-Arginine is often used to protect and prevent aggregation of therapeutic proteins and is available as USP (United States Pharmacopoeia), EP (Ph. Eur.) (European Pharmacopoeia), JP (Japanese Pharmacopoeia) and ChP (Chinese Pharmacopoeia). Compendial, U.S.P. , cGMP , multicompendial, pharmaceutical grade