217.5 mg/L = 217.5 ppm
| mg/L | ppm |
|---|---|
| 202.5 mg/L | 202.5 |
| 207.5 mg/L | 207.5 |
| 212.5 mg/L | 212.5 |
| 217.5 | 217.5 |
| 222.5 mg/L | 222.5 |
| 227.5 mg/L | 227.5 |
| 232.5 mg/L | 232.5 |
217.5 mg/L = 217.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm