Copper (Cu), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57029 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 71393 2,4,6-Trinitrotoluene Price on request 8482.22-K-ME Diltiazem (free base), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 42399-41-7 Price on request 1983.4-1G Mono-n-butyltin trichloride, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 1118-46-3 Price on request