| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | chemical fume hood | United States | Standard safety equipment in chemistry laboratories to protect against harmful chemical fumes | 1 |
| 2 | fume hoods | United States | Standard equipment in laboratories for ensuring safety while working with chemicals | 1 |
| 3 | laboratory fume hood | United States | Standard safety equipment in chemical laboratories | 1 |