I see, thank you for clarifying. I was under the impression that a specific pump needs to use a specific oil. Was it common back then to use PCB based oils for research grade diffusion pumps? If there is a chance they do have PCB I'm not sure I want to risk it by continuing to use them even with...
Thank for for the welcome. So far no information about any of these vacuum pumps except eBay listings. I found that some diffusion pumps supposedly contain PCB oils but little to no information beyond that. It looks like this information may have come before the days of the internet so I'm...
I recently found three old vintage diffusion pumps left over by the previous lab owners:
1. Veeco EP 2A
2. Veeco EP 2A-1
3. Edwards Speedivac F203
Is there a possibility that these pumps have PCB based oil inside? I do not have access to PCB oil testing at the moment. Also any further...