ASTM D-4815 Calibration Mixes Back Catalog number: 51069 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2041.4-50-ME Perfluorobutane sulfonic acid, 50ug/ml, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 59933-66-3 Price on request 72478 2-Isobutyl-3-methoxypyrazine Price on request M24P-DDE 1,1-Dichloro-2-[2-chloro(13C6)phenyl]-2-[4-chloro(13C6)phenyl]ethene, 1.2mL x 100ug/mL, nonane Price on request