Maybe I'm just a risk taker, but after breaking amps hundreds of times and getting glass in them many times, I just draw it and pin it. The size of the piece of glass would be so small that it would be insignificant, especially if you are using insulin syringes .Maybe I've just been lucky, but That's just me, yes they are a pain in the ass, but I enjoy human grade sustanon amps ....reminds me of the old school days of gear. Although, if you don't need that amp and have plenty more to replace it, then chunk it.