| Answer | Crossword Clue |
|---|---|
| ARGON | Fluorescent lamp filler |
| ARGON | Fluorescent-lamp filler |
| ARGON | Fluorescent lamp gas |
| fluorescents | A fluorescent tube or lamp |
| ARGON | Fluorescent bulb filler |
| NEON | Lamp filler |
| KEROSENE | Lamp filler |
| NEON | Tubular lamp filler |
| XENON | Flash lamp filler |
