EPA Method 8240A C Back Catalog number: 22002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11721.12-100-IO 2,3,3',4,5-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 59476 Sodium Carbonate (Na2CO3) Price on request 678026 4-n-Octylphenol-mono-ethoxylate, 10mg Price on request