EPA Method 539Mix #1, 100µg/ml in MeOH, 1ml Back Catalog number: 96884 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 59345 Perchlorate (ClO4-) Price on request 678312 Chlorfenvinphos, 10 µg/ml, Acetonitrile, 10ml Price on request 95474 1,2-Dihydro-1,1,6-trimethylnaphthalene Price on request