How do the glass fragments from opening an ampoule not interfere with the liquid inside?

Question

I’ve seen videos of people opening them close up and it seems like bits of glass go everywhere when they do. Are the glass fragments so small that this doesn’t even matter? Or are most of the videos opening them incorrectly?

In: 3

Answer 1

There will be glass particles in the liquid after opening a glass ampule. That is bad. So we draw up the liquid out of the opened ampule with a 5 micron filter needle. This will capture the glass as the liquid is drawn up. Then the filter needle is removed and discarded, taking the glass particles with it. We then place a new non-filter needle on to the syringe to inject the liquid into an IV bag, or a human.