Bottomline Bodybuilding

Make sure not to extend the needle above the fluid in the vial or you'll get unwanted air into the syringe. Regarding drawing out the oil, a thicker gauge needle will be necessary. You'll never be able to draw with a 25 gauge. Besides, if you're drawing the solution from a vial with a rubber stopper, it will dull the needle. (Dull needles hurt more.) That's where the 18 gauge comes in. Unscrew the needle on the hypo and screw on the 18 to draw out the...