PCB Mix 3.0 ppb Back Catalog number: 95275 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended M0220 4,4'-Diaminodiphenylmethane, >98%, 25g Price on request 40004 EPA Method 604.1 Analytes Price on request 70414 2-Naphthylamine Price on request