EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8206.15-500-IO Bisabolane, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 11341.15-100-AN Metazachlor methylsulfoxide,100 µg/mL,acetonitrile,1mL, Price on request 64683 Penconazole, 100µg/ml in MeOH, 1ml Price on request