Edited by the Construction Department of Henan Province, the PRC national standard approved by the Ministry of Construction of GB50325-2001 (civil engineering indoor environmental pollution control-Code for indoor environmental pollution control of civil building engineering), this standard since 2001 11 Posted January 26, January 1, 2002 implementation. 

　　

　　The purpose of this standard is to enter into the control room by the building materials and decoration materials produced by environmental pollution, engineering survey, design, construction, inspection and other construction stage is the premise of building materials and decoration materials selection, survey, design, construction, Acceptance and engineering tasks such as testing, put forward specific technical requirements. 

　　

　　This standard applies to new construction, expansion and renovation of civil engineering indoor environmental pollution control, but it needs to be noted that: he is not suitable for industrial construction, warehousing of construction, structures and those with special health requirements purify the room. The standard control of indoor environmental pollutants are: chlorine (RN-222), formaldehyde, ammonia, benzene and total volatile organic compounds (TVOC); artificial wood finishes which can be environmental test chamber method or dryer method, to the determination of free formaldehyde emission, when the dispute should be based on the results of environmental test chamber measurement method shall prevail. Plywood, block board should adopt the dryer method, determination of free formaldehyde emission; particleboard, medium density fiberboard, etc. should adopt perforation method to measure formaldehyde emissions. In addition, the perforation method and dryers law should be consistent with national standards GB / T 17657-19999 (plywood and veneer plywood physical and chemical properties of the test method) requirements.