Internal Std., 4000µg/ml Methylene Chloride, 1ml Back Catalog number: 10009 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 2829.18-50-ME Perfluorooctadecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16517-11-6 Price on request 680395 Dioxabenzofos, 10mg Price on request 1223.24-10MG Di-n-octyl phthalate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 117-84-0 Price on request