Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA15987120ME Perfluorooctane sulfonic acid, 100 ng/µl, 1ml Price on request 2784.7-10MG 2,4-Diaminoanisole, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 615-05-4 Price on request 2713.13-100MG 2-Methyl-1-[4-(1-methylethyl)phenyl]-1-propanone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 72846-62-9 Price on request