EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59476 Sodium Carbonate (Na2CO3) Price on request 66166 2,3,4,4',5,6-Hexachlorobiphenyl (166) Price on request 681176 Isoeugenol, 250mg Price on request