QC Standard 5 Back Catalog number: 56088 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680443 beta-HCH, 100 µg/ml, Methanol, 1ml Price on request 53061 SIC 2 Price on request 0259.17-10MG 11H-Benzo[a]fluorene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 238-84-6 Price on request