EPA Method 200.8 Back Catalog number: 50769 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96599 Methylphenidate Price on request 673253 Desmedipham, 100 µg/ml, Acetonitrile, 5ml Price on request 30001R EPA Method 502.2/524.2 - Liquids Price on request