| Answer | Crossword Clue |
|---|---|
| CLEANSE | Rid of impurity |
| DROSS | Impurity |
| DOPANT | Electronic impurity |
| FILTERER | Impurity remover |
| ALITE | Cement impurity |
| DROSS | Silver impurity |
| FINE | Free from impurity |
| DROSS | Impurity in metal |
| DROSS | Silver impurity, e.g. |
| DOPANT | Trace impurity inserted into a semiconductor to alter its properties |
