EPA Method 531.1 - Analytes Back Catalog number: 30042R Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71940 1-Methyl-1-cyclopentene Price on request 3035.8-100-ME 2,3,4-Trimethyl-2-pentene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 565-77-5 Price on request 70472 2,4,5-TP methyl ester Price on request