This standard specifies the product classification, technical requirements, test methods, inspection rules and markings, packaging, transportation, and storage of standard light bulbs (hereinafter referred to as bulbs) for luminous intensity and total luminous flux. This standard is applicable to maintaining and transmitting the values of national photometric units, and serves as a standard bulb for measuring luminous intensity and total luminous flux (hereinafter referred to as luminous intensity or luminous flux). 2. Reference standard GB 1406: Types and dimensions of screw type lamp caps GB 2796: Naming method for electric light source models GB 7451: Electric light source terminology QB 1112: Naming method for electric light source glass shell models 3: Terminology used in this standard should not only comply with GB 7451, but also be supplemented as follows: 3.1 Full inspection will be conducted on finished light bulbs stored in stable warehouses for no less than three days and nights one by one, and unqualified products will be removed. The percentage ratio of the luminous flux to the initial luminous flux at the ignition point of a 3.2 lumen maintenance rate bulb to 70% of its average lifespan. 3.3 Light intensity maintenance rate The percentage ratio of light intensity to initial light intensity when the bulb is ignited to 70% of its average lifespan
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