Methylparaben, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 681247 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 8358.12-50-IO 5,5'-Difluoro-3,3',4,4'-tetrachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 675898 Pentachloroanisole, 100mg Price on request 63128 2,2’,3,3’,4,4’-Hexachlorobiphenyl (128) Price on request