840.5 mg/L = 840.5 ppm
| mg/L | ppm |
|---|---|
| 825.5 mg/L | 825.5 |
| 830.5 mg/L | 830.5 |
| 835.5 mg/L | 835.5 |
| 840.5 mg/L | 840.5 |
| 845.5 mg/L | 845.5 |
| 850.5 mg/L | 850.5 |
| 855.5 mg/L | 855.5 |
840.5 mg/L = 840.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm