Surrogate Standard Back Catalog number: 91625 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680364 4-Aminoazobenzene, 100 µg/ml, Acetonitrile, 1ml Price on request 54620 IC Mix Price on request 681771 Plastic additive 11, 100 µg/ml, Ethyl acetate, 1 Price on request