Palm provides two high purity 99.95 % / 99.99 % grades of 1 x 1 Copper NUGGETS weighing 0.2 lb each to meet the demanding needs of most electroplating processes. The oxygen content of Oxygen Free 999.99%) anodes is controlled to less than 10 ppm providing uniform dissolution in cyanide, pyrophosphate and luobrite baths. Phosphorized Copper Anode NUGGETS (99.95 %) containing 0.04 to 0.065% phosphorus are required for acid copper solutions.Made in USA.