Chromatography Forum

I cleaned the 5973 source and now the 219 abundance is ~30% higher then 69, and 502 is much higher than usual (~80,000 vs ~14,000).

I tried resetting the autotune file thinking it could be corrupted, no luck.
I tried cleaning the source again, no luck.

Any ideas? The background sensitivity has increased significantly and I have a feeling this is the cause. There are no leaks in the system.

Update:

Purchased a used calibrant valve from ebay and now the machine tunes fine!