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MYCOMETER® AIR FAI (FAI)

MYCOMETER® AIR FAI (FAI)

On-site Detection of Hidden Mold (Mould) Sources

Mycometer Air FAI is a certified method to test for hidden mold (mould) in indoor environments. By comparing the ratio of fungi to total allergens, the Fungal to Allergen Index (FAI) identifies whether a hidden mold source is contributing to elevated allergen levels. This rapid and reliable approach gives consultants and contractors accurate data for remediation, verification, and health risk assessment.

WHAT IS FAI?

FAI is a unique tool for complementing the visual (and odor) assessment of buildings.

It is based on activated air sampling, shown to give reproducible results.

It gives an indication of the presence of a fungal source (mold growth).

BROCHURE

Mycometer Air FAI brochure – test for hidden mold (mould) sources with the Fungal to Allergen Index.
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ADVANTAGES

  • Same day results.
  • Meaningful interpretation, easy to communicate.
  • Reproducible results.
  • No speciation of mold necessary.
  • Multiple results (source, level of mold and of total allergens).

RESULTS & INTERPRETATION

Mycometer Air FAI interpretation and results sheet used to test for hidden mold (mould) with the Fungal to Allergen Index.
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Hidden mold (mould) discovered behind removed tapestry, illustrating the need to test for hidden mold with Mycometer Air FAI.

APPLICATIONS

  • Determine if a room is affected by a mold source (mold growth)
  • Determine the potential exposure level of mold
  • Determine the potential exposure level of total allergens and overall cleanliness.

FAQ on Using FAI to Test for Hidden Mold

What is the Fungal to Allergen Index (FAI)?

The Fungal to Allergen Index (FAI) is a certified method that compares the proportion of fungal particles to total allergens in the air. It helps identify whether a hidden mold (mould) source is contributing to elevated allergen levels indoors.

How does the FAI test for hidden mold (mould)?

By taking two simultaneous air samples — one measuring fungi and one measuring total allergens — the FAI determines if mold levels are abnormally high. This makes it possible to test for hidden mold (mould) growth that may not be visible.

When should I use the FAI method?

The FAI method is ideal when mold is suspected but not visible, when occupants report symptoms without clear contamination sources, or after remediation to confirm hidden sources have been removed.

How accurate is FAI compared to other methods?

FAI testing is reproducible, standardized, and more reliable than outdoor reference samples or passive air sampling. It provides strong evidence when you need to verify mold (mould) contamination or confirm successful remediation.

Who can perform an FAI test for hidden mold (mould)?

Trained and certified professionals can perform FAI testing using Mycometer equipment. This ensures results are accurate, defensible, and useful for remediation verification and indoor air quality assessments.

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Mycometer® air Allergen

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