15N3-Atrazine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678256 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 66194 2,2’,3,3’,4,4’,5,5’-Octachlorobiphenyl (194) Price on request 0383.12-K-IOX5 Dibenzothiophene-d8, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 33262-29-2 Price on request 63208 2,2',3,3',4,5,5',6,6'-Nonachlorobiphenyl Price on request