EPA Method 515/8150/1658 Herbicides Back Catalog number: 31196 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2884.30-5UG 17ß(H),18 alpha(H)-22-Methyl-28-nor-spergulane, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. Price on request 71980 1,trans-2,cis-4-Trimethylcyclohexane Price on request 90877 GPC Calibration Standard Price on request