EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674485 PSA-Mix 2 Price on request FA57674 Antheraxanthin, 250µg Price on request 675559 Dimefuron, 10.0 µg/ml, Acetonitrile, 10ml Price on request