Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DBHBCD d18-β-1,2,5,6,9,10-Hexabromocyclododecane, 1.2ml x 50ug/ml, toluene Price on request 1313.10-1G 1-Fluoronaphthalene,neat,neat,1g, Price on request 9425.8-10MG Valproic acid-d4, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 87745-17-3 Price on request