Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11735.12-100-IO 2,2',3,3',5,5'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 680627 Penthiopyrad Metabolite PAM, 10mg Price on request RPC-066AS 2,2,6,6-Tetrachlorobiphenyl (BZ-54) 31,89 €