EPA Method 551.1 Surrogate Standard Back Catalog number: 30102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678084 Chlorpyrifos-methyl, 100 µg/ml, Acetonitrile, 1m Price on request 97914 Chlormequat Price on request 3995.9-K-CY 1,1,2-Trimethylcyclohexane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 7094-26-0 Price on request