1 ppb =
0.000436996 grain/cubic foot
2 ppb =
0.0008739919 grain/cubic foot
3 ppb =
0.0013109879 grain/cubic foot
4 ppb =
0.0017479839 grain/cubic foot
5 ppb =
0.0021849799 grain/cubic foot
6 ppb =
0.0026219758 grain/cubic foot
7 ppb =
0.0030589718 grain/cubic foot
8 ppb =
0.0034959678 grain/cubic foot
9 ppb =
0.0039329637 grain/cubic foot
10 ppb =
0.0043699597 grain/cubic foot
11 ppb =
0.0048069557 grain/cubic foot
12 ppb =
0.0052439517 grain/cubic foot
13 ppb =
0.0056809476 grain/cubic foot
14 ppb =
0.0061179436 grain/cubic foot
15 ppb =
0.0065549396 grain/cubic foot
16 ppb =
0.0069919356 grain/cubic foot
17 ppb =
0.0074289315 grain/cubic foot
18 ppb =
0.0078659275 grain/cubic foot
19 ppb =
0.0083029235 grain/cubic foot
20 ppb =
0.0087399194 grain/cubic foot
21 ppb =
0.0091769154 grain/cubic foot
22 ppb =
0.0096139114 grain/cubic foot
23 ppb =
0.01005091 grain/cubic foot
24 ppb =
0.0104879 grain/cubic foot
25 ppb =
0.0109249 grain/cubic foot
26 ppb =
0.0113619 grain/cubic foot
27 ppb =
0.01179889 grain/cubic foot
28 ppb =
0.01223589 grain/cubic foot
29 ppb =
0.01267288 grain/cubic foot
30 ppb =
0.01310988 grain/cubic foot
31 ppb =
0.01354688 grain/cubic foot
32 ppb =
0.01398387 grain/cubic foot
↗ 显示grain/cubic foot → 十亿分比换算表