215.5 mg/L = 215.5 ppm
| mg/L | ppm |
|---|---|
| 200.5 mg/L | 200.5 |
| 205.5 mg/L | 205.5 |
| 210.5 mg/L | 210.5 |
| 215.5 | 215.5 |
| 220.5 mg/L | 220.5 |
| 225.5 mg/L | 225.5 |
| 230.5 mg/L | 230.5 |
215.5 mg/L = 215.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm