
FiO2
(%)
Maximum Precision Flow Rate (L/min)
Sea
Level
1,000
ft
2,000
ft
3,000
ft
4,000
ft
5,000
ft
6,000
ft
7,000
ft
8,000
ft
21% 40 40 40 39 37 34 32 30 28
22% 40 40 40 39 37 35 33 30 28
23% 40 40 40 40 38 35 33 31 29
24% 40 40 40 40 38 36 34 31 29
25% 40 40 40 40 38 36 34 31 30
26% 40 40 40 40 39 36 34 32 30
27% 40 40 40 40 39 37 35 32 30
28% 40 40 40 40 40 37 35 33 31
29% 40 40 40 40 40 38 36 33 31
30% 40 40 40 40 40 38 36 33 31
31% 40 40 40 40 40 39 37 34 32
32% 40 40 40 40 40 39 37 34 32
33% 40 40 40 40 40 40 38 35 33
34% 40 40 40 40 40 40 38 35 33
35% 40 40 40 40 40 40 38 36 34
36% 40 40 40 40 40 40 39 36 34
37% 40 40 40 40 40 40 40 37 34
38% 40 40 40 40 40 40 40 37 35
39% 40 40 40 40 40 40 40 38 35
40% 40 40 40 40 40 40 40 38 36
41% 40 40 40 40 40 40 40 39 36
42% 40 40 40 40 40 40 40 39 37
43% 40 40 40 40 40 40 40 40 38
44% 40 40 40 40 40 40 40 40 38
45% 40 40 40 40 40 40 40 40 39
46% 40 40 40 40 40 40 40 40 39
47% 40 40 40 40 40 40 40 40 40
48% 40 40 40 40 40 40 40 40 40
49% 40 40 40 40 40 40 40 40 40
50% or
Greater
40 40 40 40 40 40 40 40 40