Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended N-MEFBSA-M N-methylperfluoro-1-butanesulfonamide, 50µg/ml in MeOH, 1,2ml Price on request 12117.18-250MG Clofibrate,neat,neat,250mg, Price on request 71581 2,3,4,6-Tetrachlorophenol-PFB derivative Price on request