@Stevepep Not sure why you're so hellbent on peeing in my Cheerios, but try to open your mind enough to actually read the procedure. Everything you have said to criticize it has been based on your misunderstanding, not the method itself.
"If you are pushing the plunger up you are exposing the cartridge to contaminants and then adding your peptide this is not a good idea. You basically are taking a sanitized cartridge and making it unsanitary."
Nope. I never said to push the plunger up until you are actually purging the cartridge.
"I don’t follow if you are filling a cartridge without a vent you will blow the plunger out. If you are sucking the air out of the cartridge that will force the plunger up exposing the internals. It then would go down as you fill it. Unless I am missing something. Not sure if it was you but someone posted the use a device to free the plunger as well. Maybe you can get lucky and draw air out without the plunger moving and then add your peptide without blowing it out but you will get burned with this method if that’s what you are doing. Many of us have tried and you end up wasting a peptide on the floor"
Obviously pure conjecture on your part because I do it several times a week this way and have never blown the plunger out of a cartridge.
Basic understanding of how gases compress and liquids don't should keep you out of trouble here.
The device I use to "free" the plunger is called a purging station. It's designed for (you guessed it) purging a cartridge. The center hole in it has a dowel with an OD slightly smaller than the ID of the cartridge. Nice tight fit perfect for (yep, gonna do it again here) pushing the plunger up to purge the cartridge. I don't know how it's possible to apply uneven pressure to a plunger when you are putting the cartridge down a hole that keeps it completely straight on to a dowel with a perfectly flat top. It's literally no different that what your pen does every time you push that button.
Why do you need to "free" the plunger on a cartridge to get it out for sterilizing? I'm not sure how your pens work, but mine push the plunger all the way to the narrowed neck at the top of the cartridge. There's no way to use the dowel on a purging block to free it up at that point. It's bottomed out in the neck of the cartridge and the purging dowel certainly won't fit through the neck of the cartridge.
"ummm your pushing the air out of the vial to let liquid fill the void. You're searching for a solution without a problem"
Nobody thought leaded gas, thalidomide, DDT, Radium makeup, or poor hygiene during surgery were problems, either, until they knew better.
Look at every video out there of somebody reconning a vial, including Randy's. The first thing everybody does is draws a syringe full of the same air that we all just breathed, burped, and farted out and pushes it into their vial of bac water. You gotta' make a deposit before you can make a withdrawal.
The air we breathe is full of mold spores, bacteria, and all manner of things I just don't feel inclined to inject into my bloodstream in any quantities larger than necessary. I don't know about you, but I don't usually intentionally contaminate things.
I apologize if my effort to make the process of reconning a vial and filling a pen cartridge more sanitary offends you.
