EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70104 Decafluorobiphenyl Price on request 679378 Phorate-sulfone, 10.0 µg/ml, Cyclohexane, 10ml Price on request MET-11827C-250MG 1-(3,4-Dichlorophenyl)-3-methylurea, 250mg Price on request