o-Toluidine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 679892 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 2193.8-50-ME Perfluorooctane sulfonic acid, potassium salt,50 µg/mL,MeOH,1mL, Price on request 678302 1,2-Dinitrobenzene, 250mg Price on request 66138 2,2’,3,4,4’,5’-Hexachlorobiphenyl (138) Price on request