Perfluoro-3,6-dioxaheptanoic acid (NFDHA), 50µg/ml in MeOH, 1,2ml Back Catalog number: 3,6-OPFHPA Availability: In the manufacturer's stock Price on request - + Recommended 97985 EPA Method 502/524 Volatile Standard Price on request 72262 Sulfamerazine, 1000µg/ml in MeOH, 1ml Price on request 94501 Chlorinated Aromatics Standard Price on request