GC/MS Calibration Standard

2,3,3',4,4',5,5'-Heptachlorobiphenyl (189)

Acetylsalicylic acid, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 50-78-2

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