440.5 mg/L = 440.5 ppm
| mg/L | ppm |
|---|---|
| 425.5 mg/L | 425.5 |
| 430.5 mg/L | 430.5 |
| 435.5 mg/L | 435.5 |
| 440.5 | 440.5 |
| 445.5 mg/L | 445.5 |
| 450.5 mg/L | 450.5 |
| 455.5 mg/L | 455.5 |
440.5 mg/L = 440.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm