Internal Standard for AB SIM Back Catalog number: 94541 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92756 Benzene Price on request 677121 Penthiopyrad, 10 µg/ml, Acetonitrile, 10ml Price on request 8356.12-5MG 2,3,3',5,6-Pentachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 74472-36-9 Price on request