Single chamber cryogenic grinder with a self-contained liquid nitrogen tub (4-5L) and insulated case. It chills samples in liquid nitrogen then pulverizes them with a magnetically driven impactor. Ideal for oily/resinous cannabis or hemp flower, or edibles that are sticky/gummy or have a high moisture content. Holds 1 small grinding vial with 5g sample capacity (1.5g recommended for cannabis or hemp flower.) Liquid nitrogen tub can be filled manually with a pouring Dewar, or with a cryo hose and diffuser from a tank or large portable Dewar. Easy to use touch screen saves up to 20 grinding programs.