Chinese Drywall Testing Services
MAS has developed a proprietary analytical methodology for identification of sulfur gas producing Chinese drywall. MAS, a world leader in forensic construction materials analysis, has developed a proprietary analytical methodology for identification of sulfur gas producing Chinese drywall. Unique to this method is the submission of small 2' x 2' drywall samples (resulting in less damage, quicker sampling and easier repairs). With minimum invasive sampling, one can detect corrosion causing drywall and pin-point its location inside an impacted home - vastly reducing the need for unnecessary demolition.
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Extensive testing of in-situ control samples at MA...
Extensive testing of in-situ control samples at MAS has resulted in a method which conclusively distinguishes sulfur gas producing Chinese drywall based on the emission of carbon disulfide (CS2). CS2 is produced by all types of problematic drywall materials utilizing a proprietary procedure developed at MAS for the testing of suspect problematic drywall. Costly tear-outs are not required to confirm the link between household corrosion, reported occupant symptoms, and the presence of the sulfur gases producing Chinese drywall.
Dr. Bill Longo, President of MAS, states, “T...
Dr. Bill Longo, President of MAS, states, “There is a lot of misinformation being released to the general public and unsubstantiated data used by labs and agencies to identify problem Chinese drywall. We have tested or assessed each of the protocols that have been routinely referenced in the press and we can tell you in no uncertain terms that using metal analysis for strontium or pyrite, and microscopic techniques to differentiate problem Chinese drywall from non-sulfur gas producing drywall, simply do not work. We found that when enough regular drywall controls were compared to Chinese drywall using these techniques, there was really no significant difference.”
After extensive research on drywall collected from impacted and non-impacted homes in several states, MAS scientists developed a reliable GC/MS based protocol that can distinguish problem gas producing Chinese drywall from non-gas producing drywall products. Other methods (IR, XRF, etc.) are only qualitative (positive/negative) and may produce false positives (wrong results). The MAS method stands alone producing reliable quantitative results that are both fast and economical and this GC/MS type analysis has been accepted and used for decades in legal proceedings.
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