387.5 mg/L = 387.5 ppm
| mg/L | ppm |
|---|---|
| 372.5 mg/L | 372.5 |
| 377.5 mg/L | 377.5 |
| 382.5 mg/L | 382.5 |
| 387.5 | 387.5 |
| 392.5 mg/L | 392.5 |
| 397.5 mg/L | 397.5 |
| 402.5 mg/L | 402.5 |
387.5 mg/L = 387.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm