30m3 Environmental Test Chamber Specifications “George Stokes”
The 30m³ environmental test chamber is constructed from low emitting and low polluting powder-coated insulated steel panels, based on the requirements in the following standards ASTM D6670-01, ANSI/AHAM AC-1:2006, JEM1467 and GB21551 3. The test chamber has HEPA filtered supply and exhaust air, along with recirculating ceiling and wall fans. The air in the test chamber can be conditioned to a broad range of temperature and relative humidity settings. The test chamber also has an independent air circulation system, which enables the control of the number of air changes per hour from as low as 0.10 to 1.0 and above. The ante-room is also supplied with HEPA filtered air, which is maintained at a positive pressure of approximately 20 kpa. UV lamps are used to sterilize the chamber environment. The air is supplied can be purged from the chamber enabling an air purity level after cleaning to be considerably above class 10,000.
Specialist monitoring instrumentation measures concentrations of suspended particulates and the levels of other harmful airborne pollutants such as allergens, viruses, mold, bacteria, volatile organic compounds (VOCs) and formaldehyde. Air samples can be collected remotely via sample ports at designated time points.
Our chambers are located in the centre of our facility and are surrounded by our molecular biology, microbiology, mycology, virology and allergen laboratories, thus allowing air and surface samples generated in the chambers to be rapidly processed and analysed.

Aerobioloy Environmental Test Chamber Specifications, airborne pathogens and infectious aerosols

30m3 Aerobioloy Environmental Test Chamber Specifications, airborne pathogens and infectious aerosols

Aerobioloy Environmental Test Chamber Specifications, airborne pathogens and infectious aerosols
Example of test equipment available for use in the environmental test chamber
- SKC biosamplers
- Biostage impactors
- MitestTM Samplers (dust sampling)
- Sidekick Pumps
- Laser Particle Counters (0.3 to 10 microns)
- Condensation Nucleus Particle Counter (0.15 nm to 0.1 micron)
- Range of nebulisers and dust introduction systems
Gas handling, sampling and detection system e.g. for tracer gas tests and for Formaldehyde
We can generate highly valuable market and consumer relevant data for everything that can be found in the built or indoor environment from wall and floor coverings to electrical appliances and textiles.
airmid healthgroup specialises in investigating the impact of air cleaning solutions and household products on indoor environmental pollution using state-of-the-art analytical methods and models. We are experts in investigating indoor environmental factors affecting health and specialise in the assessment of key factors concerning indoor air quality, such as indoor particulate contaminants including ultra-fine particles, allergens, viruses, bacteria, mold and VOC’s.
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We can help you overcome the Challenges in Air Filtration Product Development and marketing
The AHAM AC-5 (Microbial Clean Air Delivery Rate) test is the industry standard for evaluating the airborne bacteria and virus removal performance of portable air purifiers
https://airmidhealthgroup.com/aham-ac-5-testing-microbial-cadr-certification.html
At Airmid Health Labs, we provide comprehensive validation studies for surface technologies, ensuring their effectiveness in both laboratory conditions and real-world environments where they are intended for use.
https://airmidhealthgroup.com/industries-served-airmid/infection-control-antimicrobial-technology.html
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How Airmid’s bioaerosol chambers support real-world UV efficacy validation and standards development.
🔗 https://airmidhealthgroup.com/news/uv-disinfection-iuva-nist-workshop.html
2. FAQ: ISO 16000-36:2018 Testing for Air Purifiers
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3. Reflections from the NADCA Annual Meeting: Science, Standards & the Spirit of the Industry
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Helpful Search Terms
Environmental test chamber for airborne pathogens, aerosol testing chamber for infection control; airborne pathogen removal validation facility; antimicrobial surface testing in controlled environments; GLP-compliant bioaerosol exposure chamber; infection control efficacy testing laboratory, real-world simulation chamber for HVAC testing; virus and bacteria aerosol survival studies; ISO 16000-36 air purifier chamber testing; ASHRAE 241 ventilation system validation
Key Words
Bioaerosol; pathogen; infection control; chamber; GLP; antimicrobial; airborne; ISO testing; environmental; virology
Why do we call it the George Stokes Chamber?
George Gabriel Stokes, was an Irish mathematician and physicist. Born in County Sligo, Ireland, Stokes spent all of his career at the University of Cambridge, where he was the Lucasian Professor of Mathematics from 1849 until his death in 1903. As a physicist, Stokes made seminal contributions to fluid mechanics, including the Navier–Stokes equations; and to physical optics, with notable works on polarisation and fluorescence.
As a mathematician, he popularised “Stokes’ theorem” in vector calculus and contributed to the theory of asymptotic expansions. Stokes, along with Felix Hoppe-Seyler, first demonstrated the oxygen transport function of haemoglobin, and showed colour changes produced by the aeration of haemoglobin solutions.
Stokes’s work on fluid motion and viscosity led to his calculating the terminal velocity for a sphere falling in a viscous medium.
This became known as Stokes’ law. He derived an expression for the frictional force (also called drag force) exerted on spherical objects with very small Reynolds numbers.
https://en.wikipedia.org/wiki/Sir_George_Stokes,_1st_Baronet
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