Grade of Carrier Oil

In the past I've went out of my way to purchase USP Cottonseed oil, which I end up filtering anyway. I believe cottonseed oil has toxins that need to be removed, Will buying "NF" grade oil be the exact same as USP if I filter it in the end anyway?

The reason I use CSO is because I'm allergic to a lot of other oils and it's pretty smooth.
 
Have used a few different oils, hasn't been much different no matter how much I paid.

I use filtered food grade GSO these days and it works fine aside from how goddamned think it is.

Coffee cup warmer before injections and no real issues though.
 
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