Table 5. Comparison of the fume hood performance test methods
| Test method | Invent-UK | DIN 12924 | BS 7258 | EN 14175:2003 | ANSI/ASHRAE 110-1995 |
|---|---|---|---|---|---|
| Country | United Kingdom | Germany | Great Britain | European Union | United States |
| Test parameters | Face velocity | Tracer gas test | Tracer gas test | Face velocity | Face velocity and cross draft |
| Tracer gas test | Tracer gas test | Smoke visualization | |||
| Robustness test (dynamic test by walk-bys and traffic) | Tracer gas test | ||||
| Tracer gas | 10% SF6[1] + 90% N2 @ 3.0 LPM | 10% SF6 + 90% N2 @ 3.33 LPM | 10% SF6 + 90% N2 @ 2.0 LPM | 10% SF6 + 90% N2 @ 2-4 LPM | 100% SF6 @ 4.0 LPM |
| Tracer gas sampling probes | 9 | 20 | Multi-probes depending on opening size | Multi-probes (inner and outer grids) | 1 in breathing zone |
| Use of manikin | No | Yes | No | No | No |
- ↑ Sulfur hexafluoride
60
Current Strategies for Engineering Controls in Nanomaterial Production and Downstream Handling Processes
