Approved Leak-Locating Gases (Test Media)
WARNING: This page is about a different variant/trim than selected.
| Leak-locating gas (test medium) |
Designation |
Composition/purity |
| Helium He (gaseous, compressed) |
- 4.6 (minimum quality)
- 5.0, etc.
|
- 99.996 volume % (4.6) He
- 99.999 volume % (5.0) He
|
| Not balloon gas! |
| Forming gas |
|
- 95% nitrogen N2
and 5% hydrogen H2
|