? Halogen (halogen) ranked ⅦA family in the periodic table, is a non-metallic elements, including fluorine (Fluorine), chlorine (Chlorine), bromine (Bromine), iodine (Iodine), astatine (Astatine) Switzerland ten thousand five elements through ion chromatography, elemental symbols are F (fluorine), Cl (chlorine), Br (bromine), I (iodine), At (astatine), wherein Astatine is radioactive, therefore, often said halogen means fluorine, chloro, bromo, iodo four elements, especially in the product polymeric material usually in the form of an organic compound exists. Control limits for standard halogen ion chromatograph pic, international organizations or manufacturers such as IEC, IPC, JPCA and Samsung have defined specifications ion chromatograph 883 of its halogen-free materials, which IEC61249-2-21 specifications bromine, The chloride content must be less than 900 ppm, the total halogen content must be less than 1500 ppm, the same halogen as defined in IPC IEC; JPCA the specification is defined bromide and chloride content limits are 900 ppm, does not require total halogen content. In addition to the provisions of Samsung bromide and chloride content limit of 900 ppm each, but also requires the antimony content must be less than 900 ppm party to meet the requirements of its halogen-free materials. International Electrotechnical Commission IEC 61249-2-21: 2003 is defined: Substance Permissible Limit (by weight) Bromine (Br) bromine compound 900 ppm (0.09%) Chlorine (Cl) chlorine compounds 900ppm (0.09%) Total concentration of: chlorine (Cl ) 1500ppm (0.15%) + bromine (Br) halogen ion chromatograph ic_ tester (online consultation) _ ion chromatograph is supplied by Shenzhen Huayi Technology Co., Ltd. Four Seas. Shenzhen Huayi Technology Co., Ltd. Four Seas (huayi-universal.com) (www.huayi-univerasl.com) is Shenzhen, a leader in analytical instruments, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. Huayi leadership in the whole world with the staff warmly welcome all inquiries negotiations to create universal Huayi better future.