Yiwu Pengfei Pigment Co., Ltd. is a professional supplier of metal pigments. Determination of copper is still the old iodimetry its large amount of potassium iodide, high cost, time consuming, and the newly developed spectrophotometric problem because copper reagent should not be the determination of high content of copper, it is necessary research, development of new chromogenic reagent. The authors try acetic acid - sodium acetate buffer solution, pH control, as chromogenic agent ethylene diamine tetra acetic acid disodium salt (EDTA), the determination of copper powder of high copper content, while taking advantage of EDTA masking zinc. Note that when using copper powder: 1: bronze powder temperature of 150 degrees, do not exceed 150 degrees heat, as it will be black, no gloss. 2: copper powder is oily, use an alcohol solvent dilution open oil imports bronze powder, alcohol solvents are divided into: the days of water, 783,781, ethyl, butyl alcohol solvents such as ....... 3: Do not use the high-speed mixing copper powder, copper powder high speed mixing will result in scale structure rupture, damage the surface effect. 4: Copper powder is a combination of copper, zinc, magnesium, aluminum and other components made of alloy pigments, after milling, polishing, calcination, bronze powder screening Which is good, packaging one-stop complete professional and bronze powder, the to achieve different particle effects. 5: bronze powder should be kept in an airtight container sealed, stored in a cool dry place, avoid exposure to the sun, rain or high humidity environments. 6: Copper powder standard packaging is 25 / 50KG / piece metal pail, the proposed purchase of the whole convenience store. Paint bronze powder | Zibo bronze powder | Pengfei paint provided by Yiwu Pengfei pigments Limited. Yiwu Pengfei Pigment Co., Ltd. (www.1688.com/company/ywpfyl.html)(www.4000881771.com) strong, credible, Jinhua in Zhejiang organic pigment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Pengfei into the brilliant pigment and you work for a better future!