[stackj]

My avionics man has a favorite saying. "Common sense does not constitute approved data."

It still seems that common sense would apply here. If you are using clean equipment/containers, what is the issue? Your fuel was stored at a refinery, transported by a truck or pipeline to a distribution facility, transported by truck to your airport, stored in some type of a tank, probably reloaded into a truck and finally pumped into your airplane.

Seems that moving fuel from one container to another does not harm it.

Just make sure you are properly protecting the fuel by using clean equipment. I woud say that doing this is no more likely to contaminate the fuel than the vendor(s) getting the fuel to your airport.