Scope
This standard specifies the classification, technical requirements, test methods, inspection rules and markings, packaging, transportation, and storage of rosin based liquid soldering fluxes used for soldering electrical and electronic circuit contacts This standard is mainly applicable to various rosin based liquid soldering fluxes used for printed board assembly and electrical and electronic circuit contact soldering. The performance of other types of flux can refer to this specification
Reference Standards
The provisions contained in the following standards are incorporated into the content of this standard by reference in this standard.
. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standardsGB 19o-1990 Packaging Marks for Dangerous Goods
GB/T 1722-1992 Method for Determining the Color of Varnishes, Oils, and Diluents
GB/T 2040-1989 Pure Copper Plate
GB/T 2423.16-1999 Environmental Testing of Electrical and Electronic Products Part 2, Test Methods: Test J and Guidelines: Mold Growth (idt 1EC
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China