1. The representative rooms responsible for the ventilation system to be tested (such as independent offices, meeting rooms, open spaces, etc. in public buildings; living rooms, bedrooms, etc. in residential buildings) should have a sampling quantity of no less than 30% of the total number of rooms and no less than 3. When the total number of rooms is less than 3, all rooms should be tested. (Interpretation: For example, we have 100 rooms here, and the number of rooms sampled for testing is no less than 30. If there are less than three rooms, the purification efficiency of the fresh air system should be tested in each room.)
2. The number of test points for each test room should be determined based on its area. When there are 2 or more test points in the room, diagonal, diagonal, and plum blossom shaped balanced distribution should be used, And take the average of the detection results at each point as the detection value for the room. For example, if your house is 80 square meters, you should find two locations for testing (such as the purification efficiency of the master bedroom and the purification efficiency of the lobby), and not just collect one point
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