Material Emission Testing
1m³ VOC and Formaldehyde Emission Test Chamber
Measure VOC and formaldehyde emissions from furniture, flooring, wood-based panels and building products under controlled temperature, humidity and ventilation conditions.
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ISO 16000-9Primary reference
15–40°CTemperaturbereich
30–80% RHFeuchtigkeitsbereich
What a VOC emission chamber measures
A VOC emission chamber creates a defined indoor climate around a test specimen. Clean, humidified air enters at a controlled rate; emitted compounds mix in the chamber air and are collected through sampling ports for laboratory analysis. The measured chamber concentration, specimen area and ventilation rate can then be used to determine an area-specific emission rate under the selected method.
ISO 16000-9:2024 covers VOC emissions from newly produced or aged building products and furnishings. It can also be applied to formaldehyde emission-rate testing of wood-based panels and other building products. ASTM D5116-25 provides guidance for small-scale chamber determinations of organic emissions and emphasizes temperature, humidity, air speed and air-change rate as key variables.
The chamber does not identify VOCs by itself. It provides a controlled emission and sampling environment. Compound identification and quantification require a validated sampling and analytical method, commonly thermal-desorption GC/MS for VOCs and an appropriate method for formaldehyde/carbonyl compounds.
Why low background and low adsorption matter
Clean supply airHydrocarbons, particles and target compounds in incoming air must be controlled so the blank does not mask specimen emissions.
Inert internal surfacesPolished stainless steel or glass surfaces help limit chamber-generated emissions and adsorption/desorption memory effects.
Leak-tight constructionUncontrolled infiltration changes the effective ventilation rate and can introduce background contamination.
Stable airflowAir exchange and mixing affect mass transfer from the specimen and therefore the calculated emission rate.
Accurate climate controlTemperature and humidity can significantly change emission behavior and must remain within the method tolerance.
Clean sampling pathTubing, valves and ports should minimize loss, contamination and carryover before air reaches the sorbent tube or analyzer.
Standards must match the specimen and result
| Reference | Typical scope | What to verify |
|---|---|---|
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| Parameter | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits |
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| Temperatur | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits. |
| Relative Luftfeuchtigkeit | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits. |
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System architecture
Clean-air generatorRemoves particles and background organic compounds before air enters the chamber.
Humidity conditioningControls supply-air moisture without adding target compounds.
Mass-flow controlMaintains the specified ventilation rate and provides calibration access.
Emission chamberUses low-emitting, low-adsorption materials with a cleanable interior and controlled mixing.
Monitoring systemRecords temperature, humidity, airflow, pressure status, alarms and test time.
Sampling interfaceAllows representative chamber air to be collected without disturbing the programmed flow balance.
From sample arrival to emission result
- Define the method.
Select the product standard, chamber conditions, loading factor, sampling schedule and analytical method. - Control specimen history.
Package, transport, store and prepare samples according to ISO 16000-11 or the governing procedure. - Clean and verify the chamber.
Complete cleaning/bake-out, establish the blank and confirm environmental controls before loading. - Load consistently.
Expose the correct specimen area, seal cut edges where required and document placement. - Condition and sample.
Maintain climate and ventilation; collect air at defined times using validated media and flow rates. - Analyze and report.
Apply blank correction, calculate emission rates and report all chamber, specimen and analytical conditions.
Application examples
Wood-based panelsEvaluate formaldehyde and VOC emissions from particleboard, MDF, plywood and finished panels.
FurnitureTest representative components or suitably sized assemblies with a documented exposed surface area.
Flooring and adhesivesMeasure emissions from resilient flooring, laminate, carpet, underlay and installation products.
Paints and coatingsStudy emissions from cured products using the product-specific preparation and application method.
Interior materialsAssess wall coverings, insulation, sealants and decorative products used inside buildings.
Product developmentCompare formulations, cure schedules and process changes under repeatable chamber conditions.
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Frequently asked questions
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