sterile

Hi guys,thats my first post here,i'm brazilian so sorry for my bad english.If this is not the right area of the forum to post it please appologise me. I'll start homebrewing soon,have some raw sources to try,i have easy acess to those stuff. BA BB Ethyl Oleate Guaiacol Whatman filters etc. My...

I recently bought a sterile bottle of MIC lipotropics, and when I removed the foil cap on the bottle I pulled it all the way off where the rubber cap underneath just lifts off. I did lift it off and air got to it, I put it back on and taped the cap back on it. Is it safe to use now or did I...

A friend brought back some Laurabolin from out of the country, but to avoid detection he poured it into a empty saline solution bottle (like for contact lenses). Would you consider this to still be sterile, or is there too much risk of contamination to safely inject it?