EPA Method 8240A Internal Standard Back Catalog number: 22003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93619 Urea & Caprolactam Price on request 79044 Parathion methyl Price on request 673285 Fenhexamid, 100 µg/ml, Acetonitrile, 5ml Price on request