EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N529935 N-Nitroso-N-methyl-N-dodecylamine, 10mg Price on request 673599 Fluazifop-butyl, 10 µg/ml, Ethyl acetate, 10ml Price on request 11925.24-K-ME Eplerenon,1000 µg/mL,MeOH,1mL, Price on request