carrier

I just need some oil that comes already sterilized and filtered, that comes in a vial to be used several times, to be able to mix and lower the concentration of testosterone propionate, to reduce pain after injection avoiding the crystallization of the hormone, preferably in Europe so that can...

What are the factors influencing how strong you brew your homebrews? Is it different for each compound and for different carrier oils? If I'm brewing test C and some EQ should I try to make the concentrations so that I can get enough of both in one syringe and still inject into ventrogluteal...