Commonly used method for measuring high levels 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 copper content Glitter priced, it is necessary to study the development of new chromogenic reagent. The authors try acetic acid - sodium acetate buffer solution, pH control, as chromogenic reagent with ethylene diamine tetra-acetic acid disodium salt (EDTA), the determination of copper powder of high levels of copper glitter sheet manufacturers, while the use of EDTA masking zinc, aluminum and other elements in order to eliminate the interference. Cu ^ 2 + generation and EDTA molar ratio of 1: 1 blue complex, the complex maximum absorption wavelength 2 = 730nm, the molar extinction coefficient of ε = 88.9 Glitter film, copper ion content in the 12- within 24mg / 50mL showed a good linear relationship, the linear regression equation is A = 0.0354 + 0.02317c, the linear correlation coefficient R = 0.9995. EDTA using spectrophotometric determination of copper powder of high levels of copper supply Glitter film, the result is satisfactory, there is the development and application prospects, especially for the equipment is relatively simple, and small businesses laboratory. Nano-silver has a high surface activity and catalytic properties, and is widely used in the catalyst and the cryogenic refrigerator diluent. At the same time, because of its special physical and chemical properties, in terms of immunoassay, sensor development, molecular electronics, etc. have also been widely used. In addition, a small amount of added fiber in human nanosilver can improve some performance fiber products, and it has a strong bactericidal capacity. Superfine silver by roughly spherical shape, flocculent, and other types of dendritic and flaky; can be divided according to size: fine silver, with an average particle size of 10 ~ 40pm; fine silver, the average particle size of 0.5 ~ 10gm; super fine silver powder, mean particle size <0.5pm; nano silver powder, particle size <0.1pm. Preparation of ultrafine silver powder mainly by gas, liquid and solid phase method. Fumed investment, energy consumption, low yield; prepared by solid-phase Ultrafine particle size is too large and wide silver particle size distribution; liquid-phase chemical reduction method is currently used methods for preparing small quantities of low-cost ultra-fine silver powder . Laser Jincong | Pengfei pigment quality assurance (certified) | Guangxi Jincong provided by Yiwu Pengfei pigments Limited. Yiwu Pengfei Pigment Co., Ltd. (www.1688.com/company/ywpfyl.html) Zhejiang Jinhua, inorganic pigments leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Pengfei pigment in leadership with the staff warmly welcome all inquiries negotiations to create a better future Pengfei pigment.