Copper (Cu), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57029 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 1744.13-200-T Benzo[h]quinoline, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 230-27-3 Price on request 79071 1,3-Dinitrobenzene, 1000µg/ml in Acetonitrile, 1ml Price on request 91185 EPA Method 507Mix #7 Price on request