EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3984.8-K-CY cis-1,2,trans-1,3-1,2,3-Trimethylcyclopentane, 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 15890-40-1 Price on request 675975 Isofenphos, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 71762 Formaldehyde, 1000µg/ml in MeOH, 1ml Price on request