478.5 mg/L = 478.5 ppm
| mg/L | ppm |
|---|---|
| 463.5 mg/L | 463.5 |
| 468.5 mg/L | 468.5 |
| 473.5 mg/L | 473.5 |
| 478.5 | 478.5 |
| 483.5 mg/L | 483.5 |
| 488.5 mg/L | 488.5 |
| 493.5 mg/L | 493.5 |
478.5 mg/L = 478.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm