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Environmental Relative Moldiness Index (ERMI)

The Environmental Relative Moldiness Index (ERMI) is a research tool developed by EPA scientists for estimating mold contamination. Researchers can use the index to estimate the amount of mold and some of the types of mold present. ERMI has been peer reviewed for research purposes but has not been validated for non-research purposes.

  • ERMI Factsheet (pdf) (265.82 KB)
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Last updated on September 12, 2022
United States Environmental Protection Agency

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