Hexachlorobenzene, 250mg Back Catalog number: 673829 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 98861 Formaldehyde-DNPH Level 4 (2ug/mL) Price on request 3193.23-K-IO Ethyl heneicosanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 28898-67-1 Price on request 3392.9-100-CY Endosulfan sulfate, 100µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 1031-07-8 Price on request