EPA Method 642 - Analytes Back Catalog number: 40057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681808 Cyhalofop-butyl, 100 µg/ml, Acetonitrile, 1ml Price on request PTBX 2,3,5,6-Tetrabromo-p-xylene, 1.2ml x 50ug/ml , toluene Price on request 680421 zeta-Cypermethrin, 100mg Price on request