Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Test conditions for the low‐pressure experiments.
| Absolute pressure (kPa) | ≈99 | 54.3 | 36.3 | 30.3 | 24.3 |
| Orifice diameter (mm) | N/A | 0.838 | 0.711 | 0.635 | 0.584 |
| Gas mean free path (nm) | 65.7 | 129.7 | 161.0 | 212.4 | 252.8 |
| Mass flow rate (ls min−1) a) | 10.9 | 5.9 | 3.9 | 3.3 | 2.6 |
| Face velocity (cm s−1) | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 |
Standard liters per minute referenced to 21.1 °C and 101.3kP absolute pressure.
