Method 507 Analytes Back Catalog number: 97482 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8718.10-100-IO Prometryn-d14 (di-iso-propyl-d14), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1202864-57-0 Price on request 675621 Isopropalin, 10 µg/ml, Ethyl acetate, 10ml Price on request 30003 EPA Method 500 Series Internal Std #4 Price on request