EPA Method 624 Surrogate Standard Back Catalog number: 19112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677783 beta-Estradiol hemihydrate, 100 µg/ml, Methanol, Price on request 10433.19-K-ME Flecainide acetate,1000 µg base/mL,MeOH,1mL, Price on request 3865.45-100-ME Solanine,100 µg/mL,MeOH,1mL, Price on request