THE 2-MINUTE RULE FOR BIBO CRYSTAL

Hygroscopic crystal components deteriorate when they are not often saved in adequately dry air (or perhaps a dry purge gas). This applies e.g. to KDP and BBO, and in a lesser extent to LBO. It could be practical to keep such a crystal in a to some degree elevated temperature, that makes it much easier to maintain it dry.It also has an important sof