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Table 1 House dust evaluation for mould in the 63-μm fraction, modified one-step assessment model

From: Evaluation of errors and limits of the 63-μm house-dust-fraction method, a surrogate to predict hidden moisture damage

Corresponding total count without concentration limit, indicator genus
yeast (cfu/g) Aspergillus- + Eurotium spp (cfu/g) or proportion (%) Penicillium spp (cfu/g) or proportion (%)
0 - 500,000 ≥ 200,000 cfu/g ≥ 300,000 cfu/g
500,000 - 2,000,000 ≥ 20% ≥ 20%
> 2,000,000 ≥ 420,000 cfu/g ≥ 450,000 cfu/g