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. Author manuscript; available in PMC: 2020 Jul 13.
Published in final edited form as: J Int Soc Respir Prot. 2008 Spring-Summer;25(3):27–41.

Figure 4.

Figure 4.

Correlation of the penetration levels from the polydisperse aerosol test (PAT) method and MPPS aerosol penetrations from the monodisperse aerosol test (MAT) method at 85 L/min flow rate for the seven dust mask models. (r = 0.99)