349.5 mg/L = 349.5 ppm
| mg/L | ppm |
|---|---|
| 334.5 mg/L | 334.5 |
| 339.5 mg/L | 339.5 |
| 344.5 mg/L | 344.5 |
| 349.5 | 349.5 |
| 354.5 mg/L | 354.5 |
| 359.5 mg/L | 359.5 |
| 364.5 mg/L | 364.5 |
349.5 mg/L = 349.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm