PPB to ng/g Converter
Common Conversions
| ppb | ng/g |
|---|---|
| 0.1 | 0.1 |
| 1 | 1 |
| 5 | 5 |
| 10 | 10 |
| 50 | 50 |
| 100 | 100 |
| 500 | 500 |
| 1000 | 1000 |
| 5000 | 5000 |
| 10000 | 10000 |
| 100000 | 100000 |
| 1000000 | 1000000 |
Why this conversion matters in chemistry
Fish-tissue contaminant analysis crosses this identity. A 20 ppb PCB advisory action level on a fish-consumption guidance document writes equivalently as 20 ng/g on the analytical laboratory output from EPA Method 1613B or 1668C. The numbers are the same because both notations describe parts of mass per parts of mass, with ng/g landing in the same scale as ppb. The identity is the standard type cast at the boundary between regulatory advisory documentation and analytical lab data — useful for any solid-matrix trace-contaminant report.
Formula
Worked Examples
The conversion anchor — same ratio in different prefix combinations.
About a typical regulatory action-level for fish-tissue contaminants.
0.5 ppm — about a moderate trace-level concentration.
1 µg/g = 1 ppm — the bridge step between trace and bulk regimes.