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 ppm = 1 mg/L
1 mg/L = 1 ppm
例子:
将15 零件百万转换为每升毫克：
15 ppm = 15 mg/L
| 零件百万 | 每升毫克 |
|---|---|
| 0.01 ppm | 0.01 mg/L |
| 0.1 ppm | 0.1 mg/L |
| 1 ppm | 1 mg/L |
| 2 ppm | 2 mg/L |
| 3 ppm | 3 mg/L |
| 5 ppm | 5 mg/L |
| 10 ppm | 10 mg/L |
| 20 ppm | 20 mg/L |
| 30 ppm | 30 mg/L |
| 40 ppm | 40 mg/L |
| 50 ppm | 50 mg/L |
| 60 ppm | 60 mg/L |
| 70 ppm | 70 mg/L |
| 80 ppm | 80 mg/L |
| 90 ppm | 90 mg/L |
| 100 ppm | 100 mg/L |
| 250 ppm | 250 mg/L |
| 500 ppm | 500 mg/L |
| 750 ppm | 750 mg/L |
| 1000 ppm | 1,000 mg/L |
| 10000 ppm | 10,000 mg/L |
| 100000 ppm | 100,000 mg/L |
规则