What kind of instrument test report is reliable?

With the improvement of people's quality of life and the enhancement of environmental protection awareness, it has become a fashion to test the indoor environmental quality of the house after the decoration of the new house. However, the endless online testing institutions and the dazzling array of testing products are dazzling.​​“What kind of air test data is reliable? Is there any authoritative indoor air testing agency in Ningbo?”No, netizens who just finished renovating their new home“Big face is wisdom”, I raised my doubts on the Ningbo Minsheng e-point communication platform last week. This consultation has attracted a lot of attention. In just a few days, the number of hits exceeded 30,000. The simple instrument is unreliable The result issued on the spot is false Enter keywords on the e-commerce platform“Home Air Detection”, there are tens of thousands of products searched. From a few yuan of test strips to tens of thousands of testers, everything is available. How accurate are these detection methods and equipment? Practice makes true knowledge. Last week, I purchased a popular simple detector online and rented one.“High precision”The detector, did a small test. Due to limited conditions, only the formaldehyde content value was selected. The experimental site is in the netizen“Big face is wisdom”'s new home. Experimental preparation is“Master bedroom sealed 12 hours in advance”. It is a pity that the final result is confusing: From the test situation in the bedroom, the result of the high-precision detector is 0.04mg/m3, and the formaldehyde concentration conforms to the indoor air quality of GB/T18883-2002.≤The standard requirement of 0.10mg/m3, but the result of the simple detector is 0.145mg/m3, which is 3.6 times the detection value of the high-precision detector. In the wardrobes where people generally feel that the formaldehyde content is high, the value has changed dramatically. The simple detector is 0.066mg/m3, which is even lower than the bedroom. On the Internet and major forums, it is known as“specialized”“precise”“fast”There are also a large number of private testing companies. I contacted one of them at random, and the receptionist said straight to the point that they will send professionals to bring instruments to the door, which can detect the content of formaldehyde, benzene, TVOC and other harmful gases in the home. 200 yuan a point, 2 points to start. Test results are available on site.​​“Such testing institutions, please consider more carefully.”The staff of Ningbo Environmental Protection Bureau said that at present, indoor air testing generally requires taking air samples on site and sending them back to the laboratory for precise measurement and parameter analysis. The final result must take several working days. It is impossible to get results on the spot. With the CMA mark, the test data is reliable. So, what kind of indoor air test is reliable? The expert's reply is: with the CMA logo. According to the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, CMA is“ChinaMetrologyAccreditation”abbreviation for“China Metrology Certification”. For indoor air testing, CMA has two meanings: firstly, only testing institutions that have obtained the certificate of measurement certification can use the CMA mark on the inspection report; secondly, the inspection report with the CMA mark can be used for forensic identification. legal validity. It is understood that the CMA certification qualification needs to be issued by the quality supervision department. This measurement certification has very clear requirements for the qualifications of indoor air testing institutions and laboratories. Whether a testing agency has CMA measurement certification, and whether this certification is within its validity period, can be checked through the government's website. There are 12 qualified testing institutions in Ningbo. Due to the relatively high requirements for CMA measurement certification, there are not many third-party indoor air testing institutions certified by Ningbo. At present, there are 12 registered in the Ningbo Municipal Environmental Protection Bureau. 'Ningbo City Social and Environmental Testing Institutions Management Measures (Trial)' (Yonghuanfa [2014] No. 50) stipulates that there are professional laboratories within Ningbo City that are suitable for carrying out indoor air testing business projects, with an area of ​​no less than 500 square meters meters, and the registered assets of equipment should not be less than 3 million yuan. The Ningbo Municipal Environmental Protection Bureau announced the registration and filing status of social environmental testing institutions on the Internet. 12 testing units can be found on the homepage of the Environmental Protection Bureau“Environmental protection column”query in. The staff of Ningbo Environmental Protection Bureau reminded that you can not only ask to check the information of these enterprises before testing.“CMA”certificate, but you should also check its detection scope and whether the certificate is within the validity period.
The increasing consumption demand in key segments such as tensile tester manufacturers, tensile tester manufacturers and tensile tester manufacturers have been driving the sales of and its derivatives worldwide.
If you follow these straightforward steps you can keep your tensile tester manufacturers tensile tester manufacturers. I think this article will help you make a wise decision on choosing the right .
GESTER Instruments provides a number of tensile tester manufacturers designed to handle tensile tester manufacturers.
Advanced technology and manufacturing equipment has enhanced the core quality of textile testing equipment.