Internal Standard Back Catalog number: 93185 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93615 PAH Standard Price on request S-4282 Internal Standard for GC-analysis of PAH compounds II S-4282 Compound Prod.no. Batch no. Purity CAS no. Grav. conc. 2,2'-Binaphthyl 0254,20 2951 99.9 % 612-78 Price on request 12017.7-K-ME Di(propylene glycol) monomethyl ether, mixture of isomers,1000 µg/mL,MeOH,1mL, Price on request