780.5 mg/L = 780.5 ppm
| mg/L | ppm |
|---|---|
| 765.5 mg/L | 765.5 |
| 770.5 mg/L | 770.5 |
| 775.5 mg/L | 775.5 |
| 780.5 | 780.5 |
| 785.5 mg/L | 785.5 |
| 790.5 mg/L | 790.5 |
| 795.5 mg/L | 795.5 |
780.5 mg/L = 780.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm