Why is the total organic carbon (TOC) content crucial in electronic grade pure water? TOC is an indicator for measuring the total organic matter content in water, which reflects the total amount of dissolved and suspended organic pollutants in water. In the manufacturing process of electronic products, even trace amounts of organic matter can have catastrophic effects on product performance. For example, organic compounds may form residues on the surface of the wafer, leading to circuit short circuits, decreased device performance, and even failure. In addition, organic matter may also become a breeding ground for microorganisms, further polluting the production environment. Therefore, strictly controlling the TOC content in electronic grade pure water is the key to ensuring the quality and production yield of electronic products.

From the above data, it can be seen that EW-I grade has the most stringent requirements for TOC, with its content controlled below 20 μ g/L. This is mainly applied in fields such as integrated circuit manufacturing that require the highest water quality. As the level decreases, the allowable content of TOC gradually relaxes to meet the differentiated water quality requirements of different production processes. These standards not only provide guidance for the production of electronic grade pure water, but also provide clear quantitative targets for TOC detection.

What are the common TOC detection methods? In addition to the oxidation non dispersive infrared method mentioned above, TOC detection methods also include high-temperature combustion oxidation method, ultraviolet oxidation method, etc. The high-temperature combustion oxidation method involves injecting water samples into a high-temperature furnace (usually above 900 ° C) to rapidly oxidize organic matter into carbon dioxide. The UV oxidation method utilizes the photochemical action of ultraviolet light to oxidize organic compounds without the addition of chemical reagents. The choice of detection method often depends on the characteristics of the water sample, the requirements for detection accuracy, and the functionality of the instrument. For example, online TOC analyzers typically use ultraviolet photocatalytic oxidation technology, combined with precision micro automatic sampling modules, to achieve efficient and continuous monitoring without the need for external catalysts or carrier gases.

The water quality trace total organic carbon (TOC) analyzer is a highly sensitive detection device used for accurately determining the total amount of organic pollutants in water. Launched by Xi'an Yingrun Environmental Protection Technology GroupERUN-SP3-J3 TOC AnalyzerSpecially designed for ultra pure water scenarios with TOC concentrations below 1 ppm (i.e. 1000 μ g/L), with a detection limit of 1 ppb (0.1 μ g/L), it can simultaneously detect total organic carbon (TOC), total carbon (TC), total inorganic carbon (TIC), and non blowable organic carbon (NPOC). It is widely used in pharmaceutical water, electronic grade pure water, laboratory and drinking water quality control.