SOURCE: Air Quality Sciences, Inc.

June 14, 2007 10:29 ET

AQS Provides Key Test Method for Identifying Mold Resistant Building Materials

ATLANTA, GA--(Marketwire - June 14, 2007) - In today's marketplace, a green building means an energy efficient, healthy building, but nothing can tarnish that sparkling image faster than indoor mold growth. Lenders and insurers as well as building owners and managers know that when mold takes hold, it can cause deterioration of building materials, which can be expensive and inconvenient to replace. Indoor mold growth also can become a source of indoor air pollutants, which can lead to serious health problems, including allergic reactions and asthma attacks.

To help take the guesswork out of selecting building materials that resist mold growth and to support product manufacturers in their efforts to provide products that meet this critical need, Air Quality Sciences (AQS) has developed a unique test method that reliably predicts the ability of newly manufactured building materials to resist mold growth. This method also can be used to qualify products for the new GREENGUARD Microbial Resistance Listing Program.

Unlike other ASTM test methods used to evaluate microbial resistance, the AQS mold resistance test method provides quantitative results across a wide variety of building materials, within a reasonable amount of time and under conditions favorable for indoor mold growth. Once tested, a newly manufactured product receives a performance rating, based on a quantitative growth of mold colonies during testing. Products measured to be resistant are eligible to be listed under the new GREENGUARD program.

"This publicly available listing of mold resistant products, which may be found on the GREENGUARD web site (, is an invaluable resource for specifiers, contractors, builders and others who may use these products," said Marilyn S. Black, PhD, CEO and chief scientist of AQS.

The test method that supports this rating system, Method For Measuring Microbial Resistance From Various Sources Using Static Environmental Chambers, is based on ASTM D 6329-98 (2003), "Standard Guide for Developing Methodology for Evaluating the Ability of Indoor Materials to Support Microbial Growth Using Static Environmental Chambers," which was developed for the study of indoor materials. AQS conducted a rigorous trial of the test method, followed by a yearlong pilot study of various products.

The final pilot study report is also available to download at no cost by visiting the Reports & Studies tab of the Resources page on the GREENGUARD website. A white paper that provides perspective on the usefulness of this new test method and rating system is currently available in the White Paper tab of the Premium Content page of the AQS - Aerias IAQ Resource Center website (

Air Quality Sciences, Inc. ( is a fully integrated indoor air quality (IAQ) company. With in-house chemical, microbiological, and environmental chamber test labs that are both ISO 9001:2000 registered, 17025 compliant and AIHA EMLAP accredited, and with a staff of experienced building scientists and IAQ experts, AQS provides solutions to create healthy indoor environments and avoid potentially dangerous indoor pollution. The company has tested IAQ characteristics of over 40,000 products and successfully resolved indoor air pollution in more then 1,000 buildings worldwide. AQS is accredited by German Blue Angel environmental labeling program and is the technical partner for the GREENGUARD Environmental Institute, providing assistance to product manufacturers, building contractors and real estate developers who want to achieve GREENGUARD Certification for low emitting products, mold resistance and moisture management in buildings.

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