Dow FR-250, 35 µg/mL in Isooctane, 1ml Back Catalog number: B-250S-0.35X Availability: In the manufacturer's stock Price on request - + Recommended 2545.14-K-ME (+/-)Atenolol, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 29122-68-7 Price on request N-ETFOSA-M N-ethylperfluoro-1-octanesulfonamide , 1.2ml x 50ug/ml, methanol Price on request 79069 EPA Method 8330 Analyte Price on request