Table 3.

The protection class (PC) and protection level (PL) for FFP1, N95, P100, and ER respirators using the Second Highest TIL and GM TIL Methods.

					PC		PL
Respirator	Model	Aerosol	Second Highest TIL (%)*	GM TIL (%)	Second Highest TIL Method	GM TIL Method	Second Highest TIL Method	GM TIL Method
FFP1	A	NaCl	2.01	0.89	2	3	10	30
		Corn oil	6.83	4.03	1	2	4	10
	B	NaCl	49.02	18.50	(1)	1	<4	4
		Corn oil	37.04	21.63	(1)	(1)	<4	<4
N95	C	NaCl	29.60	12.84	(1)	1	<4	4
		Corn oil	33.33	14.20	(1)	1	<4	4
	D	NaCl	3.06	0.82	2	3	10	30
		Corn oil	8.79	2.95	1	2	4	10
P100	E	NaCl	8.41	0.48	1	3	4	30
		Corn oil	14.58	1.19	1	2	4	10
	F	NaCl	8.87	0.44	1	3	4	30
		Corn oil	7.89	0.76	1	3	4	30
ER**	G	NaCl	2.18	0.33	2	3	10	30
		Corn oil	1.81	0.73	2	3	10	30
	H	NaCl	0.66	0.19	3	3	30	30
		Corn oil	2.10	1.09	2	2	10	10

^*ISO/CD (2018) recommended method.

^**ERs were used with replaceable N95 filters.

Number in parentheses indicates that TIL exceeded the ISO specified upper limit of PC.