Mold testing, or what we call “sampling,” is a standard part of most mold assessments. There are several different methods we use at Texas Mold Consultants. A few common methods include:
This is a measurement of what is present in the air in a certain area at that moment in time. We use a calibrated air pump to sample for five minutes. The pump sucks in 75 liters of air to be sampled. We use Allergenco-D air sampling cassettes, which test for mold spores, pollen, skin fragments, insects, combustion particles, toners, environmental dust and construction dust. The cassette is sealed and delivered to a lab where the types and amounts of spores in the air are determined. An outdoor reference sample is always obtained for comparison to the indoor samples.
This is used to determine what microbial activity is present in the space behind a wall. We start by hand drilling a half-inch hole through the sheet rock. Then we attach a specialized tube adapter to the Allergenco-D cassette. The end of the tube is then inserted into the wall cavity. A small rubber grommet on the tubing seals the hole and ensures a depth of approximately two inches. From there, we follow the same process as a regular air sample. A two-minute sampling time is used to test the small space.
These are used to obtain samples of fungal spores and other particles by making direct physical contact with a surface. The tape slide is a plastic slide with an adhesive surface that is pressed against the material to collect the desired sample. As with air samples, the tape slides are sealed and delivered to a lab for identification of fungal spores and mycelial fragments. The results consist of the genus of the spores and whether they're in a growth or non-growth status.