Advantages of VOC Emission Test Chamber
The coated stainless steel wall improves the adsorption capacity of test chamber for high-boiling-point materials and polar compounds. The recovery rate of tetradecane and 4-phenyl-1-cyclohexene can achieve more than 80%.

The patent is about how to deal with the connection surface between VOC emission chamber and the testing object. The technology helps to reduce the surface adhesive force, largely reducing VOC’s adhesiveness on chamber’s interior wall. In this way, the testing result of samples stored in the sampling bag is more close to the result of testing object in chamber, and the testing precision of emission chamber is largely improved.

Technical Parameters of VOC Emission Test Chamber for Electric Appliances
Model: EV-1000, EV-2000, EV-3000, EV-5000
Environment temperature: 5℃- 35℃
Environment humidity: ≤90%RH
Environment requirements: With no pollution source, TVOC≤500ug/m³
Size of climate chamber (cm): D910×W1000×H1100, D910×W2000×H1100, D1350×W1500×H1500, D1500×W1670×H2000;

Temperature adjustment range: 20℃- 70℃,more than 250 ℃ for high-temperature cleaning 20℃-70℃, more than 500 ℃ for high-temperature cleaning
Humidity adjustment range: 30-80%RH (20-30℃)
Pressure: 10±5pa
Temperature fluctuation: ±0.3℃
Temperature deviation: ±0.5℃
Humidity fluctuation: ±2.5%RH

Humidity deviation: 3%
Air exchange rate: 0.2-5 times/h, ±5%
Air velocity: 0.1m/s - 0.3m/s
Power supply: AC 380V/50Hz/ Three-phase five-wire

Start-up power: 15kw,  20kw,  30kw, 35kw;
Running power: 7kw, 9kw, 14kw, 16kw;
Background concentration of formaldehyde: Less than 15ug/m³, minimum value: 6ug/m³

Background concentration of VOC: Single VOC: less than 2ug/m³, TVOC: less than 20ug/m³
Recovery rate: More than 80%
Air purification system: Standard configurations

Testing Methods
1. The air is first processed by compressor to remove solid particles, formaldehyde and volatile organic compounds, and then enters into the test chamber.
2. The climate chamber is designed with an air jacket for conditioning the temperature in testing chamber.
3. By adopting dew point method, the humidity of climate chamber is well regulated and controlled.

Manufacture Standards
GB18580-2001 Indoor Decorating and Refurbishing Materials-Limit of Formaldehyde Emission of Wood-Based Panels and Finishing Products
GB18584-2001 Indoor Decorating and Refurbishing Materials-Limit of Harmful Substances of Wood Based Furniture
GB18587-2001 Indoor Decorating and Refurbishing Materials-Limitations of Harmful Substances Emitted From Carpets, Carpet Cushions and Adhesives

ASTM D6007-02 Standard Test Method for Determining Formaldehyde Concentration in Air from Wood Products Using A Small Scale Chamber
ENV717-1 Wood-Based Panels. Determination of Formaldehyde Release. Formaldehyde Emission by the Chamber Method.
EN13419-1 Building Products. Determination of the Emission of Volatile Organic Compounds. Emission Test Chamber Method
HJ 571-2010 Technical Requirement for Environmental Labeling Products Wood Based Panels and Finishing Products
HJ 566-2010 Technical Requirement for Environmental Labeling Products Wooden Toys

Standards for Reference
ASTM D5116-97 Standard Guide for Small-Scale Environmental Chamber Determinations of Organic Emissions from Indoor Materials/Products
ASTM D6330-98 Standard Practice for Determination of Volatile Organic Compounds (Excluding Formaldehyde) Emissions from Wood-Based Panels Using Small Environmental Chambers Under Defined Test Conditions

ASTM D6670-01 Standard Practice for Full-Scale Chamber Determination of Volatile Organic Emissions from Indoor Materials/Products
ASTM E1333-96 Standard Test Method for Determining Formaldehyde Concentrations in Air and Emission Rates from Wood Products Using a Large Chamber