Professional indoor air pollutants should be measured on the spot with professional instruments, such as atmospheric sampler, which can collect sulfur dioxide and particulate matter, or hydrogen fluoride and particulate matter in the atmosphere, so as to facilitate the study of the relationship between sulfur or fluorine in gaseous and solid substances, and then use laboratory detectors and spectrophotometers to measure accurate values.
When measuring, it is required to close the test environment for more than 8 hours (close the doors and windows). Inspectors will inform residents in advance not to add new pollution sources, such as moving in new furniture or other items, and record the main items in the room. Look carefully at the items that produce indoor pollution sources, such as office furniture, office supplies, wallpaper, tables and chairs, carpets, sofas and other items, and make a basic pollution source analysis.
Extended data
Precautions:
1. Before measuring formaldehyde, consumers should ask whether companies engaged in such business have CMA qualification recognized by the Provincial Quality Supervision Bureau and ask for relevant certificates; Pay attention to whether there is CMA logo in the upper left corner of the measured test report. The report without logo has no authority and legal benefits.
2. Don't trust free formaldehyde measurement or cheap formaldehyde measurement instruments and test paper in the market easily, because you may spend money and still can't detect the correct results.
People's Network-The cheap items of formaldehyde measurement in decoration are basically "gimmicks"