Copper (Cu), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57029 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 30041 EPA Method 531.1 Individual Analytes Price on request 91951 Paraquat Price on request 82476 CCC Class IV- Method 8261 Price on request