840.5 % = 8,405,000 ppm
| % | ppm |
|---|---|
| 825.5 % | 8,255,000 |
| 830.5 % | 8,305,000 |
| 835.5 % | 8,355,000 |
| 840.5 % | 8,405,000 |
| 845.5 % | 8,455,000 |
| 850.5 % | 8,505,000 |
| 855.5 % | 8,555,000 |
840.5 % = 8,405,000 ppm
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm