EPA Method 505 Analytes Back Catalog number: 93821 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673533 4,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 72469 1-Naphthaleneacetic acid, 1000µg/ml in Acetone, 1ml Price on request R641000 Ropinirole Hydrochloride, 25mg Price on request