Standard #1 Back Catalog number: 59215 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N-ETFOSA-M N-ethylperfluoro-1-octanesulfonamide, 50µg/ml in MeOH, 1,2ml Price on request 673076 Folic acid, 250mg Price on request MHXCHLOR (13C10)Chlordene, 1.2mL x 100ug/mL, nonane Price on request