EPA 1620 Standard 3 Back Catalog number: 53141 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11737.12-100-IO 2,2',3,3',5,6'-Hexachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 1931.6-1MLX10 Pentafluoropropionic anhydride, neat, Solvent-neat, Unit 1mL, # of units-10, Cas.no. 356-42-3 Price on request 11687.12-100-IO 2,2',3,6'-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request