EPA Method 531.1 - Analytes Back Catalog number: 30042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2916.14-100-AN Acetochlor-d11 (2-ethyl-6-methylphenyl-d11) Price on request 675108 Sodium p-n-tetradecylbenzenesulfonate, 100 µg/ml, Price on request 11634.16-250MG Ampicillin,neat,neat,250mg, Price on request