EPA Method 502.2 Surrogate Standard Back Catalog number: 91704 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685557 Bisphenol B, 100 µg/ml, Acetonitrile, 1ml Price on request 0726.12-K-IO 1,7-Dimethylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 575-37-1 Price on request 10368.9-10MG Gabapentin-d4 Price on request