Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 70612 2,4-D, ethylhexyl ester Price on request 9679.9-10MG DL-4-Fluoroamphetamine, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 459-02-9 Price on request 70556 Biphenyl Price on request