VOC clean humidity environment standard box

Test principles of test chamber

The process of testing pollutant release in the test chamber can be outlined as follows:

Put materials and products or air samples in the test chamber, and adjust the temperature and air permeability of the test chamber as required; Sampling at the exhaust port or inside the test chamber

Use appropriate analysis methods to analyze gas samples, and identify pollutants and their concentration changes with time; Then determine the release rate and release characteristics of materials and products according to the measured concentration

Purpose of test chamber

The test chamber can provide a standard test environment (such as temperature, humidity, air replacement rate and air flow velocity) or simulate a real indoor environment, and test the pollutant release rate and release characteristics of various indoor materials and products, so as to

Determine the impact of environmental variables on the release rate and release characteristics of materials and products

Classification of materials and products according to release characteristics

Develop and validate indoor air pollution models

Assessment of indoor air quality based on indoor pollutant data or prediction model

1 ASTM Standards

ASTMD6330-98 Standard Operation for Determination of VOCs Release from Wood Panels in Small Environmental Chamber under Specified Test Conditions

ASTMD6670-01 Standard Operation for Determining the Release of Indoor Materials and Products in a Full Scale Environmental Chamber

2. European Standards

● EN ｜ 13419-1 Building Products Determination of Volatile Carbon Dioxide Release Part 1: Environmental Chamber Method for Release Test

National standard

● Appendix A of GB18580-2001 Interior Decoration Materials - Limits for the Release of Harmful Substances from Carpets, Carpet Liners and Carpet Adhesives: Small Environmental Test Chamber Method