ASTM D-4815 Internal Standard Back Catalog number: 51072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3601.17-K-IO 4-Methylhexadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 25117-26-4 Price on request 675232 Dimethachlor, 100 µg/ml, Acetonitrile, 5ml Price on request 679596 Promazine hydrochloride, 100mg Price on request