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 2941.9-100-IO Endosulfan-I-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 203645-57-2 Price on request 2612.24-200-T Tetracosahydrocoronene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 54171-94-7 Price on request 0632.23-K-IO 2,6,10,14-Tetramethylnonadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 55124-80-6 Price on request