Hey thought I would give a little advice from my own personal experience. I was useing gear packaged in these "sachetes" as their called, Look like a ketchup packets. I was told to extract the gear by peircing the side and withdrawing all gear into the syringe. The mistake I made was using the same pin. When I made the stick I actually pushed a small piece of the plastic in with it, talk about an infection, I couldn't walk. Gave me strong antibiotics and was lucky it healed. It is an absolute must the area you stick must be cleaned with alcohol along with the pin and even the top of the vial. If any foreign substance enters with the pin you have a great chance of infection. I my self would use the gear as long as I felt it was good. That is your call, you know where you get your stuff. Dont rush your injections, think clean clean clean.