EPA Method 525 - Perchlorinates & Phthalates Back Catalog number: 30129 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11746.12-100-IO 2,2',3,4',5,6'-Hexachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 59640 Metals Mix #2 Price on request 680076 2,3,4-Trichloronitrobenzene, 250mg Price on request