People pay more and more attention to formaldehyde pollution. After the new decoration, people need to carry out formaldehyde testing to see if the indoor formaldehyde concentration exceeds the standard. For the use of household formaldehyde detector to detect indoor formaldehyde content, the value is not particularly accurate, so they will find a professional household formaldehyde detector to accurately measure indoor formaldehyde value.
Charge price for formaldehyde detection
For professional on-site formaldehyde detection services, different regions must have different price charging standards, especially in first-tier cities, which are definitely higher than other cities. General formaldehyde testing company charges in 100-300 yuan, and CMA laboratory charges in 300-500 yuan. You can go to the testing company to discuss the charging standard in detail.
Formaldehyde detection standard
There are two domestic standards, 1. According to GB/T 18883-2002 Indoor Air Quality Standard, the measured indoor formaldehyde concentration is lower than 0. 1mg/m3. 2. According to GB/T50325-2020 "Standard for Indoor Environmental Pollution Control of Civil Building Engineering", the formaldehyde concentration of a class of civil buildings (houses, hospitals, schools, old buildings, etc.). ) should be less than 0.07 mg per cubic meter; Class II civil buildings (offices, libraries, shopping malls, transportation transfer stations, etc.). ), the formaldehyde concentration should be less than 0.08 mg per cubic meter. According to these two standards, we can judge whether the indoor formaldehyde value exceeds the standard and choose whether to use some methods to remove formaldehyde.
Number of formaldehyde detection points placed
However, the number of sampling points for houses with different areas is definitely different. If the building area is less than 50 square meters, 1 ~ 3 formaldehyde sampling points are needed. If the building area is 50 ~ 100 square meter, 3 ~ 5 formaldehyde sampling points are needed; If the building area is greater than 100 square meter, there shall be at least 5 formaldehyde detection points. For the placement of formaldehyde detection points, we only need to pay attention to stay away from vents to prevent the detection results of sampling points from being affected.
Other detection methods
In addition to ordinary detection and CMA laboratory detection, AHMT spectrophotometry, phenol reagent spectrophotometry, gas chromatography and acetylacetone spectrophotometry can also be used to detect whether the indoor formaldehyde value exceeds the standard, among which phenol reagent spectrophotometry is the most commonly used method.
Based on the above related contents, if you want to test a house with 100 square meter, the charging standard is 500 ~ 2000 yuan. Finally, I hope these related contents can help everyone.