EPA Method 624 Standard Back Catalog number: 41121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended P48-M-ES Marker PCB Extraction Standard, 1.2ml, nonane Price on request 79048 d-BHC Price on request 680124 Pentachlorobenzene, 100 µg/ml, Cyclohexane, 1ml Price on request