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 93443 Citric acid [0.2% wt] Price on request 98309 Denatured Fuel Ethanol Calibration Level 2 Price on request 682257 Padimate O, 100mg Price on request