Aerosolized Mold

When mold spores have been disturbed, agitated or have dried out they can become airborne.  Mold spores are considered to be ‘aerosolized” when they become airborne.


An allergen is any substance that can cause an allergic reaction in people or animals.

Alternaria sp.

Alternaria is one of the most commonly found species of mold.  It is most commonly found outdoors (plants and in soil) but can be found indoors on carpets and window sills.


An agent or type of disinfectant used to kill or inhibit growth of micro organisms such as mold or mold related bacteria.

Aspergillius sp.

One of the most common molds’ found everywhere.  The species will grow on almost anything. Aspergillius is a genus of Fungi containing over 150 species’ of mold.

Biological Contaminants

A living organism, such as mold or mold related bacteria’s that are harmful to people and/or animals.

Black Mold

“Black Mold” is a term usually used to describe Stachybotrys Chartarum.  The colour of the mold does not necessarily mean that the species of mold is Stachybotrys.

Bulk Sample

A type of surface sampling method used to test for mold.  This test requires a small portion of materials (representative of the area of concern) to be removed and sent to a laboratory for testing.  This testing can be invasive depending on what needs to be tested (ie. removal of carpet sample or drywall).


The most common spore type reported in the air worldwide.  Cladisporium is usually found on plants, soil, wood, drywall, leather, fabrics etc….

Concealed Mold

Mold that is not visible.  Mostly found inside wall cavities where water damage or moisture problems persist.

Condition 1

Representative of a “normal” environment where the presence of mold/fungus is considered to be within a reasonable tolerance level. This is usually reflective of an environment that has not had any significant water issues or other events that would cause mold growth.

Condition 2

Represents an environment where there may be no visible signs of mold however through air testing it is determined that an elevated level of mold spores are found in the environment.  The presence of increased mold spores could be as a result of spores entering the environment directly (concealed mold due to water damage issue) or indirectly (cross contamination).

Condition 3

Represents environments where visible mold growth can be seen growing, or dormant in a concealed space.


Used to remove moisture out of the air.  There are many different types of dehumidifiers available on the market with a variety of features.


A white powdery substance sometimes found on foundation walls or rocks.  This occurs when there is water pressure or water seeping through foundation walls causing the natural salts and minerals to appear.


Fungi is the “domain” under which mold species find themselves classified under the scientific classification hierarchy.   Mold is a type of fungus.


HEPA – High Efficiency Particulate Air or Arrestance. This term is usually used in reference to a type of filter (ie. air filter, vacuum filter).


A device used to put water (humidity) back into the environment.


HVAC – Heating Ventilation Air Conditioning.  This term is usually used in reference to the heating/cooling system found in buildings/homes.


A device used to measure relative humidity (the amount of moisture in the air).

Mold Contamination - Level 1

A minor amount of surface mold that is isolated to a specific area. (ie. small amount of mold on a window sill which is easily wiped off with a cloth).

Mold Contimantaion - Level 2

An isolated patch of mold that is less than 10 square feet (ie. 3 feet by 3 feet) or less than 1 square meter.

Mold Contamination - Level 3

Greater than 10 square feet (or 1 square meter) or multiple smaller patches of mold (ie. more than 3 within a specific area).

Mold Contamination - Level 4

Mold contamination within the HVAC unit.  (There is usually visible mold that accompanies this).


Mycotoxins are toxins releases by some species of mold during their metabolic process.  Most people relate this to stachybotrys, otherwise known as black mold or toxic mold.

Negative Air

Negative air refers to a process used to create negative air pressure within a specific area.  It allows for the air flow to be isolated within a specific contained area so that air will only flow into the isolation chamber and not out of it.  This prevents cross contamination of the air within the isolation area from air outside the chamber.

Stachybotrys Chartarum

The mold most commonly referred to as ‘black mold’.  This species of mold produces mycotoxins which can have significant health effects on people and animals.

Surface Mold

Considered to be a level 1 contamination.  Surface mold is usually growing on dust and debris that has been deposited within an environment and is easily removed by wiping it away.

Tape Lift Sample

Refers to a process used to collect samples for laboratory analysis.  The samples are collected using a clear adhesive tape and is a non-destructive method of sampling.

Toxic Mold

Usually refers to black mold or stachybotris.  It is the mycotoxins produced by mold which have toxins, not the mold species.


VOC’s – volatile organic compounds.  An example of a VOC is the off gassing that occurs from newly manufactured materials (ie. carpet, furniture, floors).
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