Gas Internal/Surrogate Standard Back Catalog number: 92805 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683463 p-Phenetidine, 1000mg Price on request C14034900 Glutaric acid-dimethyl ester, certified, 0.25g Price on request IBPO003 Azorubin (E 122), 1g Price on request