139.5 mg/L = 139.5 ppm
| mg/L | ppm |
|---|---|
| 124.5 mg/L | 124.5 |
| 129.5 mg/L | 129.5 |
| 134.5 mg/L | 134.5 |
| 139.5 | 139.5 |
| 144.5 mg/L | 144.5 |
| 149.5 mg/L | 149.5 |
| 154.5 mg/L | 154.5 |
139.5 mg/L = 139.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm