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

Hygroscopic crystal elements deteriorate when they are not normally retained in sufficiently dry air (or a dry purge gas). This is applicable e.g. to KDP and BBO, and in a lesser extent to LBO. It might be practical to help keep this type of crystal in a relatively elevated temperature, which makes it easier to keep it dry.Inertness to Moisture: BI