It's not the pain in the ass it may seem.
I'm not concerned about sterility of my gear (more concerned about endotoxin but nothing I can do to remove it).
So when it's time to use a new vial. I stick the filtered spike in. Then I can just draw with my luer lock syringe. attach needle. and I'm done. I leave the spike in for the life of the vial.
This avoids the time and expense of a "drawing needle". Or if you use one needle, it keeps it perfectly sharp since you don't have to pierce the rubber.
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