Centre Testing International Group Co., Ltd. (NG28) is a market leader in testing, inspection, certification, calibration, audit, training & technical services; building trust between governments, enterprises, and consumers.
Sustainability is deeply rooted in NG28’s business model, by delivering science-based solutions and verification services, to increase transparency and traceability throughout the global value chain. NG28 is a proponent of carbon neutrality and sustainable development.
Centre Testing International Co., Ltd. (NG28) is the pioneer and leader in the TIC Industry which provides one-stop solutions on testing, inspection, certification, calibration, audit, training & technical services.
Our service capabilties cover the upstream and downstream of the supply chain including textile and apparel,toys,electronic appliances,medical health,food...andother industries.
Our service capabilties cover the upstream and downstream of the supply chain including textile and apparel,toys,electronic appliances,medical health,food...andother industries.
Comprehensively guarantee quality and safety, promote compliance and innovation, demonstrate brand competitiveness, and achieve higher quality, healthier, safer, and greener sustainable development.
We have established a clear governance structure in accordance with listing requirements and national regulations and policies to deal with internal and external challenges and achieve sustainable development.
Ensuring the basic rights and benefits of employees;
Providing professional skills training to promote employees’ growth;
Carrying out various kinds of activities to balance employees’ work and life.
The one main reason for the early failure of electronic products is the improper use of electronic soldering materials or the quality of the soldering materials product. NG28 can make the quality and reliability evaluation for solder paste, solder bar, solder wire, flux, cleaning agent and other soldering materials. These can help to improve the quality of products, optimize the processing and mounting process and ensure the reliability of products.
? Business Challenges
What are the potential quality hazards of IC SMT process?
How is the reliability of SMT process verified?
? Service Content
Ⅰ. Applicable Test Standards
J-STD-004B Requirements for Soldering Fluxes
J-STD-005 Requirements for Soldering Pastes
J-STD-006 Requirements for Electronic Grade Solder Alloys and Fluxed and Non-Fluxed Solid Solders for Electronic Soldering Applications
JIS Z 3197 Testing methods for soldering fluxes
JIS Z 3283 Resin flux cored solders
ASTM D1298 Standard Test Method for Density,Relative Density,or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
GB/T 507 Insulating liquids. Determination of the breakdown voltage at power frequency
GB/T 6324.2 Test method of organic chemical products. Part 2:Determination of dry residue after evaporation on a water bath for volatile organic liquids
GB/T 9491 Liquid flux for soldering(Rosin base)
GB/T 9740 Chemical reagent. General method for the determination of dry residue after evaporation
GB/T 12582 Liquid hydrocarbons. Determination of electrical conductivity. Precision meter
IPC TM-650 Test Methods Manual, etc.
Ⅱ. Product Range
Electronic and electrical products, Solder paste, Solder, Solder wire, Flux, Cleaning agent, etc.
Ⅲ. Standard Sample Requirements
Please contact our business or customer service, based on specific standards.
Ⅳ. Test Item
Main Test Items |
|
Specific gravity/Density |
Wetting Test |
Solids Content |
Solder Paste Metal Content by Weight |
Spread Test |
Flux Content by Weight |
Quantitative Halide Content Tests |
Copper plate corrosion Test |
Resistivity test of aqueous solution |
Determination of dry residue after evaporation |
Cross-section analysis |
Electrical conductivity |
Dryness |
Breakdown voltage |
Acid Value Determination |
Withstand voltage |
Copper Mirror Test |
Physical stability |
Surface Insulation Resistance Test |
Uniformity |
Electrochemical Migration (ECM) Test |
Appearance and dimensions |
? NG28 Solution
NG28 provides a comprehensive one-stop solution of reliability testing, including:
Environmental test
Reliability test
Reliability design
Reliability analysis
Product evaluation
Reliability training and consulting
? Our Strengths
NG28 has many advanced equipments and has passed CMA/CNAS qualification accreditation, the test data is accurate and reliable, and the test report has international credibility.
The scientific laboratory information management system ensures the efficient operation of each service link.
The technical expert team has rich practical experience and can provide professional, rapid and comprehensive one-stop service.
The service network is all over the world, and many first-line brands designate cooperative laboratories.
? Service Process
Consult customer service → confirm the test plan → fill in the application form → send the sample → pay the test fee → test → send electronic report → express paper report
? Frequently Asked Question
How long does the test period take?
The normal period is 5-7 working days (except the time when the sample is in the test chamber). If you need urgent help, please contact our sales or customer service.
How much sample is needed for SIR (surface insulation resistance) and ECM (electrochemical migration)test of flux?
It is each recommended to send 200ml flux for SIR or ECM test.
what is the channel definition in ECM test?
In the process of ECM testing or SIR testing, To determine the number of test channels is to determine the number of positions of insulation resistance monitoring.
How long is the corrosion test exposure period of solder paste?
Different standards provide different test time. For example, GB/T 9491 recommends 7 or 14 days, while IPC J-STD-004B recommends 10 days, so the test time should be based on the standard specified by the customer.
How much solder paste sample is needed to test the wettability test?
It is recommended to send samples for more than 400g. If other test items need to be tested at the same time, it is advised to send more samples for standby use.