EPA Method 619 - Triazine Pesticides Back Catalog number: 40017 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 682025 Difenzoquat methyl sulfate, 250mg Price on request 8931.16-100-ME Iomeprol, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 78649-41-9 Price on request 81501 2,4-D methyl ester Price on request