EPA Method 507/525 Analyte Mix #1 Back Catalog number: 30082 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C15712000 4-n-Octylphenol, certified, 0.25g Price on request 11707.12-100-IO 3,3',5,5'-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 677500 D6-Parathion-methyl, 100 µg/ml, Acetonitrile, 1m Price on request