EPA Method 507 Analyte Mix #1 Back Catalog number: 30182 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1030.13-500-IO 2,4,5-Trimethylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17057-91-9 Price on request 2925.7-100-AN Desethylterbuthylazine-d9 (tert-butyl-d9), 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1219798-52-3 Price on request 79119 Clopyralid (Lontrel) Price on request