EPA Method 1657 Analytes Back Catalog number: 31784 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1138.18-10MG n-Octadecane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 593-45-3 Price on request 682090 Crotonic acid, 100mg Price on request 20036 CLP Pesticide Mix “A”, in HE:TO [1:1], 1ml Price on request