EPA Method 551.1 Standard Back Catalog number: 94519 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3206.16-K-IO 9-cis-Hexadecenoic acid , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 373-49-9 Price on request 8467.4-100 Trichlorfon, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 52-68-6 Price on request 10323.5-1MG N-Nitroso-D,L-proline-d7 Price on request