142.5 mg/L = 142.5 ppm
| mg/L | ppm |
|---|---|
| 127.5 mg/L | 127.5 |
| 132.5 mg/L | 132.5 |
| 137.5 mg/L | 137.5 |
| 142.5 | 142.5 |
| 147.5 mg/L | 147.5 |
| 152.5 mg/L | 152.5 |
| 157.5 mg/L | 157.5 |
142.5 mg/L = 142.5 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm