Ammonium as N Back Catalog number: 50791 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2559.8-50-ME 1H,1H,2H,2H-Perfluorooctane sulfonic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 27619-97-2 Price on request 3954.3-1ML 1,3-Dichloropropane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 142-28-9 Price on request 96631 Cocaine Mix Price on request