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| Location | Steps |
|---|---|
| Outside gHe tank | Measuring gHe purity from the gHe tank (outside) |
| Tube trailer | Measuring gHe purity from the tube trailer |
| Reference Sample from gHe cylinder (gHe located at the west-wall on the cryoplatform) | Reference gHe purity sample from a gHe cylinder |
| At HR3 (before purifier) | Measuring gHe purity before the purifer |
| At the QT PLC Cabinet (after purifier) | Measuring gHe purity right after the purifer |
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