210.5 mg/L = 210.5 ppm
| mg/L | ppm |
|---|---|
| 195.5 mg/L | 195.5 |
| 200.5 mg/L | 200.5 |
| 205.5 mg/L | 205.5 |
| 210.5 | 210.5 |
| 215.5 mg/L | 215.5 |
| 220.5 mg/L | 220.5 |
| 225.5 mg/L | 225.5 |
210.5 mg/L = 210.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm