Qingdao Puren Instrument Co., Ltd. is a high-tech joint-stock enterprise specializing in the research, development, production, sales and technical services of ion chromatographs and related accessories certified by ISO-9001. It has participated in the drafting and formulation of the ion chromatograph metrology and verification regulations of the People's Republic of China JJG823-2014 , is a member unit of the Analytical Instrument Branch of the Chinese Instrument Society.

All the company's products have independent intellectual property rights and have more than 50 corporate patents and copyrights, which is of great significance to the creation of domestic brands to replace imported products. The company has been established for more than 20 years and has always regarded "innovation, quality, integrity and service" as the company's unswerving development tenet, constantly developing and developing high-tech products, and providing users with mature and stable industry solutions.

Puren successfully developed and developed an online ion chromatograph, and the results were well received by the expert group. In 2015, he carried the "Snow Dragon" to the Antarctic scientific research. Puren launched a voltammeter detector in 2002, which is suitable for the detection of anions such as bromine, iodine, sulfur, and cyanide, and cations such as lead, copper, zinc, and cadmium. Puren obtained a dual-system ion chromatograph test certificate in 2007, effectively overcoming the problem of mutual interference in integrated structures and realizing simultaneous detection of anions and cations. We have developed a domestic brand of ion chromatography automatic sampler and obtained invention patent (ZL 201110457038.8), achieving automatic sampling and rapid analysis. In 2016, a dual-system portable ion chromatograph was launched, which was lightweight to carry and realize rapid detection of anion and cations; a precipitation sampler with dual-purpose rain and snow was launched, which can realize wireless communication and have no problems in running online for a long time.

Stable instrument products, professional application support, and fast after-sales service have been unanimously recognized by experts and users. PIC series ion chromatographs are widely used in tap water, drinking water, environmental protection, agriculture, quality inspection, disease control, petroleum, chemical industry, colleges and universities, Scientific research, third-party testing and other systems. The market share has grown steadily, with products covering 32 provinces, cities and autonomous regions across the country, and has achieved export and foreign exchange earnings.