Chinese Drywall Testing and Analysis

We understand many of our current and prospective clients are running into serious issues with imported Chinese Drywall. Centek provides services beneficial to determine air quality and product off gassing. Using accepted analytical methods, superior instrumentation and Centek supplied user friendly sampling equipment, we can analyze for suspected compounds causing contamination (total VOC’s, sulfur species). This represents a cost efficient, increased sensitivity approach to fulfilling your analytical needs.

Contact us to set up a meeting or presentation via web conference, over the phone, or face to face. Our experienced laboratory director, Russ Pellegrino, will assist you in developing a sampling program.

Chinese Drywall in the News

Chinese Drywall Testing and Analysis

Air and Headspace Analysis – Considerations regarding the importance of Sampling Media and Environmental Conditions during sampling and analysis:

Tedlar Bags vs. Treated Canisters

What is the most accurate sampling media and why? The graphs on the left compare data from a number of different media used to sample sulfur compounds in air.

The tedlar bags and treated canister were spiked at 50 ppb. Over a period of time the media was analyzed to watch stability and reproducibility. Data shows the pretreated quartz coated canister negates the sulfur compounds from adhering. Thus, making the canister media the most reliable media, relevant to detecting sulfur compounds in the matrix.

If you were to look at the tedlar media under a microscope, you would see that the surface is not smooth. In fact it would have tiny scratches throughout the material. Centek also know that sulfur compounds are very sticky. Sulfur compounds have a tendency to stick inside the tedlar bag because of active sites. Canisters with specially treated quartz coatings when examined under a microscope, show a surface that is very smooth, much like glass.

Air and Headspace Analysis

Environmental Conditions

Using what we know about sulfur compound collection and analysis, sampling media and environmental conditions play a huge role in being able to identify contamination in air and drywall products. It is my belief that analysis can be consistent if sampling and analysis are subjected to a stringent protocol.

~ Russell Pellegrino – Centek Labs

Environmental Conditions