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How Should I Choose A Standard for Indoor Air Quality Testing?

Posted on September 25, 2018
by PureLiving

One day before a testing project, our clients receive a detailed preparation email which reminds them to close their doors and windows either 1 or 12 hours prior to the appointment. The time is based on the testing standard selected by our consultants based on their knowledge of your site conditions. Why is it not the same?

 

First, let’s talk about why we need to close the doors and windows.

Humans are spending more and more time indoor as society urbanizes. Many people spend 90% of their time indoors, especially during summer and winter when the need for air conditioning is high. Thus, closing the doors and windows before testing simulates the daily living environment, which decreases the variance of the testing data from the actual living condition.

 

There are certain standards for the time length of closing the doors and windows before collecting data. In China, there are two common standards:

GB50325-2010 (Code for Indoor Environmental Pollution Control of Civil Building Engineering) is issued by China Ministry of Construction. It is a mandatory standard that defines the allowable level of 5 different air components, including formaldehyde, benzene, radon, ammonia, and TVOC. The space being tested needs to be sealed off 1 hour before testing.

GB/T18883-2002 (National Indoor Air Quality Standard) is issued by China‘s National Environmental Protection Administration and the Ministry of Health. It is a stricter standard, setting a maximum level for longer exposure as recommended by the government. It regulates the level of 19 different air components, including formaldehyde, TVOC, and benzene. The space being tested needs to be sealed off 12 hours before testing to accurately represent conditions experienced every day.

 

There are 3 major differences between the two standards mentioned above:

1. Regulatory

The GB50325-2010 "Code for indoor environmental pollution control of civil building engineering" is mandatory, which must be met or else there will be punishments from relevant government departments.

The GB/T18883-2002 "Indoor Air Quality Standard" is optional; however, it is recommended that buildings meet the requirements for improved occupant health.

 

2. Scope of Application

The GB50325-2010 "Code for indoor environmental pollution control of civil building engineering" focuses on construction projects. The air pollution level refers to the number of harmful substances released by the construction and decoration materials.

The GB/T18883-2002 "Indoor Air Quality Standard" gives certain guidelines for indoor air parameter values, which can be used to evaluate the indoor environmental air quality of residential and commercial buildings

 

3. Parameter Benchmark

The two standards have different requirements for parameter values.

parameter chart
*Civil buildings are divided into two categories according to the different requirements of controlling indoor air quality:
Class I civil construction projects: residential buildings, hospital, nursing home, kindergartens, school classrooms, and other civil construction projects
Class II civil construction projects: office buildings, shops, hotels, cultural and entertainment places, bookstores, libraries, exhibition halls, sports complex, public transport waiting rooms, restaurants, barber shops and other civil engineering projects.
 

Summary

summary
 

 

About PureLiving

PureLiving is a leading indoor environmental consulting company with a simple mission: to help our clients create healthy homes and workplaces. Our expert team of building engineers, HVAC specialists, and environmental consultants advises clients on air and water quality, mold, asbestos and lead exposure issues and helps to improve their indoor environmental quality through testing to identify sources of pollution and then eliminating them. Our total range of solutions includes pollutant testing, design and installation of cutting-edge filtration systems, monitoring, and odor and chemical reduction.

With operations in six cities across China, Hong Kong, and India, PureLiving is the industry’s provider of choice for assessment, engineering, implementation, and monitoring of indoor environmental quality. Find out more at www.purelivingchina.com.

 

关于境纯

境纯是业内领先的室内环境咨询公司,我们的宗旨是为客户创造健康的居家和办公环境。境纯拥有一支包括建筑工程师、HVAC专家和环境顾问在内的专家团队,能够通过专业的检测识别室内污染源,向客户提供针对空气、水质、霉菌、石棉和铅污染问题的解决方案,并予以清除,以提升室内环境质量。我们的服务范围涉及污染物检测、先进过滤系统的设计和安装、环境质量监测和化学方法除味。境纯在中国大陆、香港和印度设有六家分支机构,是室内环境评估、工程设计、设备安装和室内环境监测服务的首选品牌。欲了解更多信息,请登陆官网www.purelivingchina.com。

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