BIBO CRYSTAL NO FURTHER A MYSTERY

Hygroscopic crystal elements deteriorate when they're not often saved in adequately dry air (or maybe a dry purge gas). This applies e.g. to KDP and BBO, As well as in a lesser extent to LBO. It may be beneficial to keep this type of crystal at a to some degree elevated temperature, which makes it simpler to retain it dry.Inertness to Dampness: BIB