EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678105 Pyracarbolid, 100 µg/ml, Acetonitrile, 1ml Price on request NIST-1947 Lake Michigan fish tissue -Org. contaminants, 5x8g Price on request KM03519DA Cyclohexyl 2-chloroacetate, 97%, 1g Price on request