Ion chromatography (chloride and sulfate) testing procedures Description: ion chromatography using water must be ultra-pure water resistivity of 18.2MΩ; ion chromatography process, the use of containers must be dedicated; analysis of all volumetric flask, pipettes, syringes and other equipment must be washed three times with ultrapure water more before use, can not cross-use to avoid cross contamination. Standard reagent ion chromatography using a reference reagent best choice, if not you should select gifted class pure reagents. Before using the reagents, standards should be drying. If the result is higher demand need you need to select the relevant national standard reference materials center was purchased. Weighing all items requires the use of calibrated weighing scales millionth. Eluent preparation of pure water should be degassed pretreatment. Eluent preparation: Accurately weigh 0.7632 g Na2CO3, rohs halogen tester volume with ultrapure water to 2000mL, sonication and shake mixing spare. 6.3.1, taking a new syringe, sample preparation of a good solution 5mL, discharged after complete rinse the syringe. 6.3.2, once again taking the prepared solution 5mL, electronic halogen tester, by ion chromatography sample injection inlet, after the completion of the software control interface, click on the "System Injection" after spectrum acquisition, save your work. Halogen Hazard: Add to plastics and other polymers are mainly used to improve the ignition of halogen, which is higher than ordinary polymer material ignite, too about 300 ℃, when burned, halogen tester will emit halogenated gases rapidly absorb oxygen, so that the fire is out. But because 1. halogen soluble in water, combined with moisture in the air will form acid rain 2. plastic injection molding process, the halogen will release hydrogen halide, corrosion mold; 3.PCB plate (> 200 degrees) temperature soldering process will also release hydrogen bromide; at the same time, these halogen-containing flame-retardant materials when burned produces large amounts of toxic gases (such as dioxins, furans DIOXIN), Dongguan halogen tester, damage to the environment, and can exist in the environment for many years, even a lifetime accumulation in the organism, can not be discharged, so many international companies are actively promoting the complete abolition halogen-containing materials. Dongguan halogen tester | Dongguan ion chromatograph (Online) | 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.