TweetThey are very cheap and Research Labs has the clear empty vials with stoppers and is a board sponsor and excellent service. I do it exactly as your doc said. What i do is mix 1ml bac water with the powder and inject it into the 10ml vial and add 4ml more bac water for a total of 5ml (1000IU per ml). Alot of ppl use a slin syringe and do sub-Q inject, especially if they are on cycle, but i do IM injects if i can.