GC/MS Calibration Standard Back Catalog number: 43026 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66189 2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Price on request 2513.9-500MG Acetylsalicylic acid, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 50-78-2 Price on request S-4761-2-10T Custom mix of C10-C16 alkyl PAHs, 25 components each 2µg/mL in Toluene (Sigma quality 155004, ACS Spectrophotometric grade): Prepared gravimetrically by weighing components and solvent to a calculated 0,2mg/mL. This product has been diluted gravimet Price on request