EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92258 Semi-Volatile Internal Standard Price on request ERM-BD284 Whole milk powder - Aflatoxin M1 (high level), 30g Price on request XA20635000AL Benzo(a)pyrene, 100µg/ml in Acetonitrile, 1ml Price on request