A great presentation. Thanks. There is a related leak-detection method to the visual methods mentioned, where a solvent like acetone can be applied in small amounts to vacuum seals or joints. The solvent ingress will cause a spike in the internal pressure, which you can read using standard vacuum gauges. I don't advise using this on rubber o-ring seals as the solvent might damage the seal, and you have to be careful not to get the solvent on nearby cables or hoses! However, on con-flat (with a soft-metal seal) this is a very easy (and cheap!) way to find a leak. Excessive use of this technique can cause your Inverted Mag "Penning" gauges to need cleaning... :)
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
A great presentation. Thanks. There is a related leak-detection method to the visual methods mentioned, where a solvent like acetone can be applied in small amounts to vacuum seals or joints. The solvent ingress will cause a spike in the internal pressure, which you can read using standard vacuum gauges. I don't advise using this on rubber o-ring seals as the solvent might damage the seal, and you have to be careful not to get the solvent on nearby cables or hoses! However, on con-flat (with a soft-metal seal) this is a very easy (and cheap!) way to find a leak. Excessive use of this technique can cause your Inverted Mag "Penning" gauges to need cleaning... :)
Excellent presentation
Can you share This PPT ...