305.5 mg/L = 305.5 ppm
| mg/L | ppm |
|---|---|
| 290.5 mg/L | 290.5 |
| 295.5 mg/L | 295.5 |
| 300.5 mg/L | 300.5 |
| 305.5 | 305.5 |
| 310.5 mg/L | 310.5 |
| 315.5 mg/L | 315.5 |
| 320.5 mg/L | 320.5 |
305.5 mg/L = 305.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm