Concentrating H2SO4 without distillation with flask ans some PTFE

[Latin King]

Shameless copy paste from

sciencemadness.org

​

Source

https://www.sciencemadness.org/whisper/viewthread.php?tid=152456#pid618770

While i was searching for a method to concentrate acid that i read a long time ago i bumped into this. Anyone here familiar with this approach?

 

[blockchain]

This seems intresting. Will try it later