Adding halogens (fluorine, chlorine, bromine, iodine) in plastics and other polymer products to improve ignition, its advantages are: high flash point than ordinary polymer material, ignition at about 300 ℃. When burned, it will emit halogenated gases (fluorine, chlorine, bromine and halogen rohs Tester, iodine), rapid absorption of oxygen, so that the fire is out. But its disadvantage is the high concentration of chlorine released when the visibility dropped due to not recognize the escape route will lead to, at the same time highly toxic chlorine gas, affect the respiratory system, in addition, halogen polymer combustion released halogen gas contained in When combined with water vapor, it will produce corrosive gases (hydrogen halide), for some equipment and buildings caused by corrosion. PBB, PBDE, TBBPA and other brominated flame retardants are currently using more flame retardant, mainly used in electrical and electronic industry, comprising: a circuit board, computer, fuel cells, televisions and printers. These halogen-containing flame retardant material to produce dioxins when burned, and can exist in the environment for many years the United States halogen tester, even life-long accumulated in the organism, can not be discharged. Therefore, many international companies are actively promoting the complete abolition of halogen-containing materials, such as prohibiting the use of halogenated flame retardants in their products and so on. At present, for halogen-free requirements, different products have different limits: If no halogenated wire and cable wherein the halogen indicators: All values ??halogen ≦ 50PPM (according to regulations PREN 14582); generating hydrogen halide content of post-combustion <100PPM ( According to regulations EN 5067-2-1); PH value of water soluble hydrogen halide produced after combustion ≧ 4.3 (slightly acidic) (according to regulations EN-5 0267-2-2); products after combustion in a sealed container Through beam of light transmittance rate ≧ 60% (according to regulations EN-50268-2). Halogen-free requirements: bromine, chlorine content of less than 900ppm, (bromine + chlorine) is less than 1500ppm. About GP50 instrument parts and IP25 and IP25 parallel pump GP50 are dual piston pump can be reduced in parallel flow pulses through the traffic-sensitive detector for sensitivity testing. This parallel pump design flow rate range of up to 10mL / min, while with 3-, 4-, and 9 mm column with the use of the best. GS50 and GS50 IS25 and IS25 latency pump series for the variable speed tandem piston pump, to ensure it meets the most demanding Chromatography system for mobile phase delivery system requirements without pulsation. This series pump is ideal for low-flow chromatography applications. The pump has a low ripple, low noise, low delay volume and balance the advantages of a short time. This pump for 2-mm column using exhibit excellent performance, 4.6-mm column for application analysis also showed good performance. In order to extend the life of the plunger and the seal tester Diane halogen, especially in the use of harsh conditions mobile phase halogen tester, capable of matching the best continuous ring cleaning device. EG50 eluent generator EG50 eluent generator deionized water electrolysis can be used to produce high purity, non-carbonate eluent (potassium hydroxide or methyl sulfonate), it will give a minimum baseline drift experiments, the highest The retention time stability and the best chromatographic resolution, resulting in highly reproducible experiments, EG50 eluent generator also control both anionic or cationic CR-TC system. ED50A electrochemical detector ED50A electrochemical detector may be a broad range of numerous compounds excellent detection sensitivity and selectivity of electrochemical detection analysis in three ways (conductivity, dc amps and integral amps). ED50A electrochemical detector CD25 conductivity detector has all the features. CD25 conductivity detector CD25 conductivity detector is microprocessor controlled, can automatically adjust the range of the high sensitivity of the conductivity detector, which is disposed inside ATLAS? And SRS? Suppressor driven to. US halogen tester, Huayi universal (certified), halogen tester 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.