An Efficient, Robust, and Inexpensive Grinding Device for Herbal ...
The grinder was constructed to be able to provide various particle sizes, to be easy to clean, and to have a minimum of dead volume. ... larger particles or pieces of plant material may be difficult to moisten and therefore, extract quantitatively. ... crushing after freezing in liquid nitrogen (~cryogenic grinding) [1, 2], in a ball mill, or ...