On top of what #1 said - and only do this if you know how to safely handle and dispose of acetone if not it’s not worth the risks and the things you can damage with spills if your I careful - this stuff will melt or soften abs plastic or any polymers involving styrene - but acetone does a great job of dissolving resins and stuff in a bong and it’s basically always sold as 99% whereas the iso you have may only be 70 or 91 and only 99 if you know where to buy