If you Bake it all at once...All the BA will evaporate at once, right....and the BA is in there for a reason. So lets say you have a 10ml vial of 50mg prop. You go ahead a bake the entire 10 ml vial before your first IM. More then likley you will go ahead and use 1 ml as soon as the process is complete, right. (I am assuming your not going to blast the enire 10ml at once.) You are okay there the first time, but then you will not use another ml or two until a few days later. This is were I see an issue. There were a few days that passed with no BA in the mix at your second or third and so on. Right? The Prop will eventually start to fall out and crystalize...also, you wil be running the risk of contamination to your prop...and the longer is is w/out BA or some other preservative the better chance you may get a pathogen to grow in the Prop. Even with sterile techniquie, this is very possible.and the longer without the BA the greater your risk. The BA is what is usually used to keep this from happening. When you noramlly bust open a vial or amp..that typical smell of juice in the air, or when you taste it, they almost, always have that familiar burn on your lips...that isn't the active AAS..it is the BA that causes this. Long story short...I would burn off the BA with this type of product only and directely before you use it every time. I know it is being anal...but it takes away the pain, it keeps the prop mixed right, and it keeps out anything that may be using your prop as microbiology lab.
Sorry to be a nerd about it, but I am just looking out for you fellas.