Hi everyone,

So I have a gc ms from Shimadzu and cleaning the source is easy. However they told me I need an engineer to come to clean the lenses and the pre rod. I think I have an issue with one of the lense since its voltage is super high -50V and the voltage le my filaments increased by 0.5V...

I will have an engineer coming for free (first time to clean the lenses) but I was wondering if someone here had experience with cleaning these things and if this is really that difficult?

Thanks