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The control test should be a mold test kit left open on ground outside building and at least five feet beyond drip edge of room. Use same time (thirty minutes to one hour) that was utilized in indoor air tests for settling method tests. There should be no rain or snow falling.
Self-Interpretation of Mold Test Kit Results
The tester can then either watch test kits himself for mold growth, with self-interpretation of mold test kit results, over a seven day time period, or send mold test kit to mold lab immediately, or after self-observation growth period.
Here is how to self-interpret visible mold growth in mold test kits after seven days of mold growth---
1. If tester observes and count a greater number of mold colonies of any particular mold colony type (possessing same or similar color, shape and/or structural pattern) growing in one indoor mold test kit than in outdoor control mold test kit, then tester can reasonably decide that there is a possible indoor-generated mold infestation in area/location involved in that particular mold test.
2. If tester observes a particular mold colony type growing in a particular indoor mold test sample that is NOT present in outdoor control mold test, then tester can reasonably conclude that there is a possible indoor-generated mold infestation in area/location in which he conducted that particular mold test.
3. If tester observes three or more of same mold colony type growing in one mold test kit, then tester can reasonably conclude that there is a possible mold infestation in area/location in which he conducted that particular mold test, regardless of number of similar mold colonies present in outdoor control test.
Why is that conclusion possible? Consider this rat analogy: if there are only three rats living inside a particular area of one’s home or building, is there no indoor rat problem just because there are more rats living immediately outside of home or building?
It is time-cumulative exposure and body intake of even modest numbers of indoor airborne mold spores that makes residents or occupants sick from mold exposure. Because residents or occupants spend many hours per day indoors in a home or workplace, they are continually inhaling or ingesting mold spores.
When mold spores enter into residents’ eyes, nasal/sinus areas, lungs, stomach (eating and drinking food and beverages upon which airborne mold spores have landed), or open body sores, mold-spores, once inside body, can begin dangerous mold growth inside body because of abundance of body moisture and food to eat (people’s bodies)!
4. If tester observes three or more of same mold colony types in several or many mold tests taken from different areas of home or building, tester can reasonably conclude that mold species is possibly widespread in its contamination of tested home or building.
The most dangerous mold species to residents and occupants are molds that are omni-present through out home or building, thus causing widespread, cumulative mold exposure and body intake. For more information about use of mold test kits, mold laboratory analysis, and mold species identification, please visit---
http://www.moldlab.biz http://www.moldinspector.com http://www.moldmart.net
Mr. Phillip Fry is a Certified Mold Inspector, a Certified Mold Remediator and the author of the ebooks Do-It-Yourself Mold Prevention, Inspection, Testing, and Remediation; Mold Health Guide and the co-author of Mold Legal Guide.