| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| certified reference material certificate | 1.8 | 0.9 | 5329 | 44 | 40 |
| certified | 1.89 | 0.4 | 5105 | 12 | 9 |
| reference | 0.3 | 0.2 | 485 | 46 | 9 |
| material | 0.62 | 0.8 | 7586 | 9 | 8 |
| certificate | 1.31 | 0.5 | 3676 | 100 | 11 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| certified reference material certificate | 0.85 | 1 | 8090 | 28 |
