EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72902 Methyl alpha-hydroxyisobutyrate Price on request 678448 Paclobutrazol, 100 µg/ml, Acetonitrile, 1ml Price on request 72982 Hexythiazox Price on request