520.5 mg/L = 520.5 ppm
| mg/L | ppm |
|---|---|
| 505.5 mg/L | 505.5 |
| 510.5 mg/L | 510.5 |
| 515.5 mg/L | 515.5 |
| 520.5 | 520.5 |
| 525.5 mg/L | 525.5 |
| 530.5 mg/L | 530.5 |
| 535.5 mg/L | 535.5 |
520.5 mg/L = 520.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm