浓度（摩尔）是每升溶液的摩尔数量的度量，通常以每升摩尔（mol/l）测量。
1 mol/cm³ = 1 ppm
1 ppm = 1 mol/cm³
例子:
将15 每立方厘米的痣转换为零件百万：
15 mol/cm³ = 15 ppm
| 每立方厘米的痣 | 零件百万 |
|---|---|
| 0.01 mol/cm³ | 0.01 ppm |
| 0.1 mol/cm³ | 0.1 ppm |
| 1 mol/cm³ | 1 ppm |
| 2 mol/cm³ | 2 ppm |
| 3 mol/cm³ | 3 ppm |
| 5 mol/cm³ | 5 ppm |
| 10 mol/cm³ | 10 ppm |
| 20 mol/cm³ | 20 ppm |
| 30 mol/cm³ | 30 ppm |
| 40 mol/cm³ | 40 ppm |
| 50 mol/cm³ | 50 ppm |
| 60 mol/cm³ | 60 ppm |
| 70 mol/cm³ | 70 ppm |
| 80 mol/cm³ | 80 ppm |
| 90 mol/cm³ | 90 ppm |
| 100 mol/cm³ | 100 ppm |
| 250 mol/cm³ | 250 ppm |
| 500 mol/cm³ | 500 ppm |
| 750 mol/cm³ | 750 ppm |
| 1000 mol/cm³ | 1,000 ppm |
| 10000 mol/cm³ | 10,000 ppm |
| 100000 mol/cm³ | 100,000 ppm |
规则