Copper AA Standard (Cu) Back Catalog number: 50459 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-LCS-C40 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 59030 Wavelength Calibration Solution (3B) Price on request 31582 EPA Method 507 Nitrogen Phosphorus Pesticides Price on request