Description All-American pressure canners are considered to be the gold standard when it comes to sterilizers. They are known for their high build quality and industry leading safety features such as metal on metal sealing system and positive action clamps for safety and steam build up. The 921 is a good sized pressure canner that can fit large amounts of mushroom spawn medium, substrate medium or other mycology lab items. All American – 921 Pressure Cooker 21.5 qt includes 2 canning racks, recipe book, instruction manual, pressure gauge, geared steam gauge, and a weighted pressure regulator with settings of 5, 10, and 15 psi.
