EPA Method 500 Series Internal Std #4 Back Catalog number: 30003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673492 Bupirimate, 10 µg/ml, Ethyl acetate, 10ml Price on request 92784 4-Bromofluorobenzene Price on request 673261 Dimethomorph, 100 µg/ml, Acetonitrile, 5ml Price on request