HOW MUCH YOU NEED TO EXPECT YOU'LL PAY FOR A GOOD BIBO CRYSTAL

Hygroscopic crystal elements deteriorate when they're not often kept in sufficiently dry air (or simply a dry purge fuel). This is applicable e.g. to KDP and BBO, and in a lesser extent to LBO. It could be handy to maintain this kind of crystal in a somewhat elevated temperature, that makes it much easier to preserve it dry.Inertness to Humidity: B