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Air Sampling Method
Ambient air samples for mold are collected using a Micro5 Air Cassette and our easy to use, custom made hand pump. The person collecting the samples simply attaches the air cassette to the end of the hand pump and proceeds to pump the hand pump 100 times, which pulls the required 30 liters of air into the sampling cassette and across the small glue plate (known as a spore trap) inside the cassette. Any materials found floating in the ambient air are pulled into the cassette and adhere to the glue plate including any and all viable (alive) and non-viable (dead or dormant) mold spores. This is extremely important since other kits on the market, such as the "Professional Mold Test Kit", use passive agar plates which sample only a small portion of the viable mold spores present in the ambient air. Health studies have shown that viable (alive) and non-viable (dead or dormant) mold spores have the same health impacts and concerns regarding human exposure to mold spores; specifically, to effectively evaluate mold conditions in a home or business both viable and non-viable mold spores must be tested for and quantified.
Since our pump is hand held, a home or business owner can collect what is commonly known as a "composite air sample". As an example, since 100 pumps are required to pull in the required volume of air into the cassette, the individual sampling their home can do 30 pumps in the basement while walking around, 40 pumps on the main floor while walking around and 30 pumps on the upper level while walking around. While walking around a homeowner is stirring the air and releasing mold spores that have settled in carpeting, etc.; thereby, collecting a more representative sample. However, if the home or business owner is concerned about a specific area, level or room they can still do all 100 pumps in that single location.
During field and laboratory testing our custom made hand pump was shown to be more effective in sampling the ambient air for mold spores that using more expensive equipment such as a Gillian Personal Pump or Zefon Pump. In side by side laboratory testing no statistical differences were noted between more expensive pumps and our hand pump. The reason our hand pump is so effective is the air is drawn into the cassette at a faster rate and the exhalation port is located near the intake port; this allows the stirring of the ambient air being sampled, thereby keeping the heavier mold spores airborne longer.
Finally, since a known volume o ambient air is pulled into the cassette the analytical data is quantified, meaning, the home or business owner will know the exact type and quantity of mold spores per cubic meter of air in their home or business. Therefore, the home or business owner will have a better understanding of mold levels and can take appropriate steps to remediate the mold if it is determined to be present in elevated concentrations.
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