Copper AA Standard (Cu) Back Catalog number: 50460 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4045-05-10MEX5 Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 1x10mL, 5x10mL Price on request 680220 3-Hydroxybutyric acid, 50mg Price on request S-4037-10K-IOX5 2-Bromothiophene in isooctane, Blank Units: 5x1mL ampoules Price on request