842.5 ppm = 842,500 ppb
| ppm | ppb |
|---|---|
| 827.5 ppm | 827,500 |
| 832.5 ppm | 832,500 |
| 837.5 ppm | 837,500 |
| 842.5 ppm | 842,500 |
| 847.5 ppm | 847,500 |
| 852.5 ppm | 852,500 |
| 857.5 ppm | 857,500 |
842.5 ppm = 842,500 ppb
1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm