250.5 mg/L = 250.5 ppm
| mg/L | ppm |
|---|---|
| 235.5 mg/L | 235.5 |
| 240.5 mg/L | 240.5 |
| 245.5 mg/L | 245.5 |
| 250.5 | 250.5 |
| 255.5 mg/L | 255.5 |
| 260.5 mg/L | 260.5 |
| 265.5 mg/L | 265.5 |
250.5 mg/L = 250.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm