2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 63174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82503 EPA Method 8250/8250A - Analytes Mix #11 Price on request 681864 D-Psicose, 10mg Price on request 98862 Formaldehyde-DNPH Level 5 (5ug/mL) Price on request