EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10982.9-100-ME (±)-Vanillomandelic acid-d3,100 µg/mL,MeOH,1mL, Price on request ACQ-SE10-030 Ethanol standard in serum,1.0g/L,serum, 3mL Price on request 673253 Desmedipham, 100 µg/ml, Acetonitrile, 5ml Price on request