EPA Method 551.1 - Analytes Mix “A” Back Catalog number: 30100 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9495.9-100-IO Tri-n-propylphosphate-d21, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 678256 15N3-Atrazine, 100 µg/ml, Acetonitrile, 1ml Price on request 674010 Monuron, 100 µg/ml, Acetonitrile, 5ml Price on request