EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682536 5-Methyl-3-heptanone, 1000mg Price on request 13150-100AC5 Phenols - Mix 4, 100μg/ml in Acetone, 5ml Price on request 673303 Fluroxypyr, 100 µg/ml, Acetonitrile, 5ml Price on request