most common allergens tested for are dust mites, cockroach, cat and dog dander, rat and mouse. Many labs report cat dander, dog dander, cockroach and dust mites from one carpet/bulk or dust sample.
Analysis can be done for just one or more though.
dustmites can grow after a dust sample collection, it's a good idea to refrigerate and ship sample to lab as soon as possible.
Common collection points in home/building for indoor
allergens are bedding, mattresses, carpets and upholstery.
Kitchens are the usual spot for cockroach collection point.
Although with people and children bringing food to a bedroom computer area,
the bedrooms are fast becoming another common collection place.
A particle counter
“The main use for handheld particle
counters is checking contamination levels and locating sources of particle emissions.
The small size and weight of these particle counters make them ideal for point-of-use measurement of particle contamination
at critical locations. Hand held particle counters have proven themselves in many settings.”
particle counter is an instrument that detects and counts particles.
In a clean home or room the number of particles in the air should be lower than in a room with allergens or mold growth producing mold
spores into the air.
The room with mold, and allergen particles should be higher.A particle
counter is just another tool for the mold inspector.As with air sampling (tests) or infrared thermal imaging
cameras many things can influence the results.The inspector using the best equipment during the
inspection should provide the most accurate and detailed information on the condition of the property.
Mold inspectors / environmentalist can determine indoor
air quality more quickly with the use of a particle counter.
contaminants include mold, fungus, bacteria, viruses, animal dander, dust mites, pollen, human skin cells, cockroach parts
or anything alive or living at one time. These are the biggest enemy of Indoor Air Quality specialists because they are the contaminants that cause health problems. Levels of biological contamination
depend on humidity and temperature that supports the livelihood of micro-organisms. The presents of pets, plants, rodents
and insects will raise the level of biological contamination.”
“The Indoor Air Quality problem is a complex situation
requiring a variety of angles of attack with a variety of tools. The particle counters available today provide two distinct
advantages: First, the ability to detect particles and sort by size range before there are symptoms and complaints.
Second, they can perform these tests and report results very quickly, giving all parties concerned the earliest warning and
most reaction time possible. This sort of pro-active approach goes a long way toward maintaining a high standard and awareness
of indoor air quality. The particle counter is a valuable tool that should be used in the IAQ arena.”John
Contreras is a technical writer in the Marketing Communications Department at Pacific Scientific Instruments,
Senior Mold Assessor at Radon & Mold Professionals
Certified Indoor Environmentalist
FL Licensed Mold Assessor MRSA 5
FL DOH Certified Radon Tech R1867
Doug Wall, CIE
Certified Indoor Environmentalist serving SW Florida including Naples,
Marco Island, Bonita Springs, Estero, Ft Myers, Cape Coral and Sanibel Island.
Florida Licensed Mold Assessor MRSA 2
FL DOH Certified Radon Tech R1751
Bonita Springs / Naples, Florida
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