Unicorn 4T Grow Bag With Injection Port, measures 4" x 3" x 18" with gusseted sides, and a 0.2 micron filter. Autoclavable bag is composed of 3.0 mil thick polypropylene plastic, and can hold over 2X the grain of quart mason jars, or around 2 lbs of hydrated grain. These bags will double your master grain spawn capacity, make breaking up your grains easy, and will eliminate the time consuming process of cleaning jars.
4T - Injection Port - 0.2 micron filter
These bags are not intended to be sealed before sterilization, however they can be successfully "pre-sealed" before sterilizing if all excess air is removed from the bag, excess bag material is neatly folded around the bag, and the bags are allowed to cool slowly and completely before removing them from the sterilizer. If the pressure cooker/sterilizer being used lacks an internal liner, caution should be taken to avoid contact with the internal walls of the unit, as the higher temperature retained by the walls can melt the bags.