343.5 mg/L = 343.5 ppm
| mg/L | ppm |
|---|---|
| 328.5 mg/L | 328.5 |
| 333.5 mg/L | 333.5 |
| 338.5 mg/L | 338.5 |
| 343.5 | 343.5 |
| 348.5 mg/L | 348.5 |
| 353.5 mg/L | 353.5 |
| 358.5 mg/L | 358.5 |
343.5 mg/L = 343.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm