BIBO CRYSTAL NO FURTHER A MYSTERY

Hygroscopic crystal supplies deteriorate when they're not normally retained in sufficiently dry air (or a dry purge fuel). This applies e.g. to KDP and BBO, As well as in a lesser extent to LBO. It might be handy to maintain this type of crystal at a to some degree elevated temperature, that makes it much easier to keep it dry.Inertness to Dampness