Dry Ice Maker Machine Food Grade - Ultra Dense BlockDry Ice Maker Machine Food Grade Ultra Dense Block This dry ice machine makes ice the way you want it! Using 2 tons of hydraulic force to compress the formed CO2 snow into a solid brick. Other dry ice makers produce a loosely packed brick that sublimates quickly. Our bricks take up to 1. 5+ hours to sublimate. All of the parts that touch liquid CO2 or ice are food grade materials. Must use a CO2 tank with a dip tube!! Otherwise you will not get the