So wirh pinning how exactly does it work? You draw with say 21g and then switch the needle? The syringe stays full of the oil while you just switch the needle?
I was trying to figure it out because slin pins obviously don't allow for that type of exchange and it's the only inject experience I have (peptides)
I was trying to figure it out because slin pins obviously don't allow for that type of exchange and it's the only inject experience I have (peptides)