. 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.

Table I.

Effect of Isopropanol Treatment on Dust Mask Filtration Performance

Category	Dust Mask Models	Average Penetration Levels from the PAT Method at 85 L/min (%)
Category	Dust Mask Models	Control	Isopropanol-Treated
Low-penetration	A	0.53 ± 0.12	55.20 ± 0.61^*
Medium-penetration	B	12.20± 0.70	75.12 ± 3.23^*
Medium-penetration	C	9.62 ± 1.32	62.30 ± 3.19^*
High-penetration	D	89.20 ± 1.27	89.10 ± 2.92
	E	85.80 ± 1.73	87.96 ± 2.45
	F	81.42 ± 4.72	86.18 ± 4.23
	G	ND	ND

Note:

Significantly (P=<0.05) different from the control; ND = not determined.