Copper (Cu), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57029 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 673205 Atrazine-desethyl, 100 µg/ml, Acetonitrile, 5ml Price on request 678278 Chlorthiophos, 100 µg/ml, Acetonitrile, 5ml Price on request 51139 NWTPH-Gx Surrogate Mix Price on request