What instrument is used to measure TOC?

In the field of water quality analysis, TOC analyzer is a key device for measuring total organic carbon. TOC (total organic carbon) value is an important indicator for evaluating the purity of water quality, especially in the pharmaceutical and electronics industries. This article will introduce in detail the working principle, technical characteristics and typical applications of professional TOC measuring instruments to help you understand how to accurately determine the content of organic pollutants in water.

1. Working principle of TOC analyzer

TOC analyzer uses UV oxidation-conductivity detection principle for measurement. The instrument first completely oxidizes the organic compounds in the water sample into carbon dioxide through UV lamps and oxidants, and then uses a high-sensitivity conductivity sensor to detect the amount of carbon dioxide generated, thereby calculating the total organic carbon concentration. .

TOC analyzer has intelligent control function, which can be operated by the instrument itself or remotely controlled by computer software. The waterproof and dustproof design enables it to adapt to various industrial environments, and the disassembly-free structure is convenient for daily maintenance. 485 signal output and 4-20mA interface can achieve seamless docking with the factory control system, realizing real-time monitoring and recording of water quality data.

2. Technical advantages of TOC analyzer

TOC analyzer has many technical innovations. The UV lamp and peristaltic pump are designed to be easy to observe, allowing users to understand the working status of key components at any time. The electronic signature and audit tracking functions meet the compliance requirements of the pharmaceutical industry, and all test data are traceable. The performance index of repeatability RSD≤3% ensures the high reliability of the test results.

The instrument is also easy to operate. One computer port can control multiple detection units, greatly improving work efficiency. The wide sample temperature adaptation range (1-95℃) enables it to handle water samples under various working conditions. The compact size (45×25×22cm) and low power consumption design (100W) allow the instrument to be flexibly installed in different locations to meet online monitoring needs.

3. Typical applications of TOC analyzers

TOC analyzers are widely used in the pharmaceutical industry. From purified water to water for injection, the instrument can accurately monitor organic pollutants in pharmaceutical water systems to ensure the safety of drug production. Installing TOC analyzers in water production and distribution systems can achieve early warning of abnormal water quality and avoid expensive production interruptions and quality risks.

In the electronics industry, TOC analyzers are equally important. In the semiconductor manufacturing and wafer processing process, the quality of ultrapure water directly affects the product yield. The instrument's 0μg/L detection limit and high precision can promptly detect ion exchange resin failure or system contamination to ensure stable production processes. In addition, TOC analyzers are also important tools for water quality monitoring in power plant deionized water systems and the chemical industry.

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