| Project Overview

Flux refers to a chemical substance that assists and promotes the soldering process in the soldering technology, and at the same time has a protective effect and prevents oxidation reactions. As a key chemical medium in the soldering process, flux needs to pass tests such as solid content, specific gravity, viscosity, halogen content, acid value, spread rate, copper mirror/copper plate corrosion, surface insulation resistance (SIR), and electrochemical migration to verify its activity, corrosiveness, electrical reliability, and environmental compliance. It must ensure compliance with standards such as J-STD-004 and JIS Z3197 to guarantee the soldering quality and long-term stability of electronic components.

| Test Objective

1. Verify the wetting and process compatibility of the flux within the specified temperature window through the spread rate, viscosity, and specific gravity;

2. Quantify the risks of residual corrosion and insulation failure with the help of copper mirror/copper plate corrosion, SIR, and electrochemical migration;

3. Ensure that the product meets the requirements of environmental protection regulations and the green supply chain such as J-STD-004 and JIS Z3197.

| Testing Standards

GB/T 9491 Flux for tin soldering

IPC J-STD-004 Requirements for Soldering Fluxes、

JIS Z3197 Testing methods for soldering fluxes, etc.

| Service Products / Fields

Electronic products, household appliances, automotive industry, aerospace, medical equipment, communication equipment, industrial chemicals, etc.

| 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.

3. Efficient Service: Respond quickly to customer needs and provide a full-set of flux testing services.

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