VOC cleanroomPurpose:

VOC cleanroomWe can provide standard testing environments (such as specified temperature, relative humidity, air displacement rate, and airflow velocity) or simulate real indoor environments, and test the pollutant release rates and characteristics of various indoor materials and products, thereby:

• Determine the impact of environmental variables on the release rate and characteristics of materials and products;
• Classify materials and products based on their release characteristics;
• Develop and validate models for predicting indoor air pollution;
• Using indoor pollutant data or predictive models to assess indoor air quality（IAQ）Conduct evaluation;

The testing principle of the environmental chamber:

The process of testing pollutant release in an environmental chamber can be summarized as follows: placing materials and products or their samples in the testing chamber, adjusting the environmental conditions such as temperature, relative humidity, and air replacement rate in the chamber as needed; Sampling at the exhaust outlet or inside the environmental chamber; Using appropriate methods to analyze gas samples, identify the main pollutants and their concentration changes over time; Then determine the release rate and release characteristics of the material and product based on the measured concentration.

Design reference standards for environmental chambers

1American Society for Testing and Materials Standards

(AMERICAN SOCIETY FOR TESTING AND MATERIALS，ASTM)

1.1testvoCsrelease

a、ASTM D 5116-97Standard Guide for Determination of Organic Release in Indoor Materials and Products by Small Scale Environmental Chamber

b、ASTM D 6330-98Measurement of Wood Panels in Small Environmental Boxes under Prescribed Testing ConditionsVOCs(Formaldehyde removal)Standard Operating Procedures for Release

c、ASTM D 6670-01Measurement of indoor materials and products using a full-scale environmental chamberVOCsStandard Operating Procedures for Release

1.2Test formaldehyde release

a、E 1333—96Standard Test Method for Determination of Formaldehyde Concentration and Release Rate in Gas Emissions from Wood Products in Large Environmental Chambers

b、ASTM D 6007-02Standard Test Method for Formaldehyde Concentration in Gas Emissions from Wood Products Using a Small Scale Environmental Chamber

2 European Standards

a、ENV 13419-1Building Products—VOCsDetermination of release amount1Part: Release Test Environment Box Method

bTesting formaldehyde releaseENV 717-1Environmental chamber method for measuring formaldehyde emissions from artificial boards

3 Chinese standards:

aTestingVOCsRelease:GB 18580-200 1Interior Decoration Materials—Appendix to the Limits of Harmful Substance Release from Carpets, Carpet Pads, and Carpet AdhesivesA(Normative annex)Small environmental test chamber method.

bTesting formaldehyde releaseGBl8580-2001Interior Decoration Materials——Limit of formaldehyde release in artificial boards and their products6.4Section: Determination of formaldehyde emissions from decorative artificial boards using the climate chamber method.

4 Other standards:Other standards

ASTM D 5116-97

ASTM D 3237-00

ASTM D 6803-02

ASTM D 6007-02

ASTM D 6330-98

ISO 16000-6 INDOOR AIR-PART 6

JISA 1901

* The test chamber meets the following test standards:

ASTM D 6007-02

California ANSI/BIFMA X7.1-2007

California ANSI/BIFMA X7.1-2007