EPA Method 528 Internal Standard Back Catalog number: 93188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678092 Flucythrinate, 100 µg/ml, Acetonitrile, 1ml Price on request 98304 Alcohol Standard Price on request N-13562-100MG Thiamethoxam, 100mg Price on request