| Answer | Crossword Clue |
|---|---|
| etchers | ETCHER, one that etches (to engrave with acid) |
| etcher | one that etches (to engrave with acid) |
| nitrator | one that nitrates (to treat with nitrate acid) |
| nitrators | NITRATOR, one that nitrates (to treat with nitrate acid) |
| buffers | A solution that resists changes in pH when acid or alkali is added to it. Buffers typically involve a weak acid or alkali together with one of its salts |
| buffer | A solution that resists changes in pH when acid or alkali is added to it. Buffers typically involve a weak acid or alkali together with one of its salts |
