EPA 1620 Standard 4 Back Catalog number: 53142 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended UFA-024S Methyl arachidonate C20:4, 10.0mg/mL in Heptane, 1ml Price on request 673723 N-(2,4-Dimethylphenyl)formamide, 100mg Price on request 676685 Ethofumesate-2-keto, 100 µg/ml, Cyclohexane, 1ml Price on request