Surrogate Standard Back Catalog number: 94031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended SFA-014S Methyl eicosanoate C20:0, 10mg/ml in Hexane, 1ml Price on request 685230 Ergocalciferol, 250mg Price on request 31023 EPA Method 515.1 Internal Standard Price on request