Electron microprobe objective lens oil

[Kestas]

I came across this post on a microscopy listserver I subscribe to:

"I am looking to top up the objective lens oil reservoir on my electron microprobe. I used to be able to purchase "Voltesso 35" in a 5 gallon pail but now can only purchase it in 45 gallon drums which seems a little ridciulous. Just wondering if anyone can suggest an alternative to "Voltesso 35" that can be purchased in a more reasonable quantity."

Does anybody know what he needs?... can anybody help him?

 

[tom slick]

From a quick google search it looks like it is a electrical insulating oil for transformers made by ESSO.

http://www.imperialoil.ca/Canada-English/Files/Products_Lubes/IOCAENWPOESVoltesso.pdf

http://www.etc-cte.ec.gc.ca/databases/Oi...ltesso_35).pdf]

 

[Kestas]

Thanks for digging that out, Tom. The listserver members also chimed in with good info.

http://www.mil-specproducts.com/productPage.aspx?prodID=518

Another suggested contacting the local electric utility, who sometimes give out small quantities for free.

 

[MolaKule]

I would investigate Schaeffer's 281S, a heat transfer fluid with about 35kV dielectric constant.

Contact Salesrep here, one of the sponsors.

 

[Steve S]

Yeah my electron microscope doesn't need to be plugged it , it takes 2 AA batteries.