| Project Background

Purified water is a critical raw material and process medium in high-tech industries such as pharmaceuticals, biotechnology, microelectronics, and medical devices, directly involved in core operations such as manufacturing, cleaning, and formulation. Its quality directly affects product safety (e.g., sterility, absence of pyrogens), efficacy (e.g., drug stability, electronic component yield), and regulatory compliance. Pharmacopoeias of various countries (e.g., USP <643>) and industry standards (e.g., ASTM D7573, SEMI) list TOC as one of the key quality indicators for purified water and set stringent limits.

| Project Overview

This test employs a Total Organic Carbon Analyzer (TOC, UV-persulfate oxidation method) to quantitatively analyze the total organic carbon content in purified water samples. The UV-persulfate oxidation TOC analyzer is mainly used to measure carbon content in liquids. It uses safe ultraviolet radiation to enhance the oxidative capacity of persulfate, while a detector measures the resulting carbon dioxide concentration. The detection range extends from ppb to ppm levels.

| Test Objective

1. Regulatory and industry compliance;

2. Monitoring the operational stability of purified water systems;

3. Providing critical data support for system maintenance, cleaning validation, and deviation investigation;

| Testing Standards

ASTM D1193 Standard Specification for Reagent Water

GB/T 11446.8-2013 Test method for total organic carbon in electronic grade water

| Service Products / Fields

Consumer electronics, automotive electronics, semiconductor manufacturing, pharmaceutical biotechnology, aerospace, new energy electronics, laboratories, and analytical testing.

| MTT Advantages

1. Professional Team: Equipped with a number of highly experienced testing engineers and technical experts.

2. Advanced Equipment: Equipped with internationally leading testing instruments to ensure accuracy and reliability of results. Extremely high sensitivity and ultra-low detection limits (down to ppb–ppt levels), simultaneous multi-ion analysis, and strong anti-interference capability.

3. Efficient Service: Rapidly respond to customer needs and provide one-stop, high-efficiency inspection services.

4. Authoritative Certification: The laboratory is certified by ISO/IEC 17025, ensuring that test reports have international credibility.