IC Standard 1C Back Catalog number: 50701A Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10155.12-100-AN 4-Aminoazobenzene,100 µg/mL,acetonitrile,1mL, Price on request 682850 Pyrogallol, 1000mg Price on request 98529 4,4’-Diamino-3,3’-dimethyldiphenylmethane Price on request