EPA Method 8260B Internal Standard Back Catalog number: 22213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 689731 Metribuzin-desamino, 100µg/ml in Acetonitrile, 5ml Price on request 675567 Ethalfluralin, 100 µg/ml, Ethyl acetate, 5ml Price on request 674949 Anhydroerythromycin A, 2,5mg Price on request