I believe Australia has mandatory voting and achieves a ~95% participation of registered voters basically every election, though they do enforce it with either a day in court or a fine.
I do wonder if you fined people, or wasted a day of theirs with court, whether it would have an impact in Greece after a couple of elections?
Idk how true that is, it’ll be highly dependent on what you’re trying to dissolve.
This sounds to me more like the advice I’ve heard for using isopropyl for sterilizing equipment and surfaces, its more to do with how quickly the pure stuff evaporates. Evaporate too quickly and it doesn’t sterilize, whereas 70% is best of both worlds.