An autoclavable, patented spawn incubation bag with a microporous filter patch that allows gas exchange but precludes the passage of contaminants. Spawn bags are an economical substitute to canning jars. When producing bulk amounts of substrate, spawn bags are able to hold larger amounts of rye grain, seed, or any substrate that you may be using. Our Impulse Sealer is used to create an air tight seal which highly reduces the introduction of contaminates.

Measuring 21 x 8.25 x 4.75 inches, these bags are larger than most spawn bags, allowing them to hold more material. Widely used by mushroom growers throughout the world.

(Myco Supply can also have spawn bags custom made to meet your needs. Contact us for more information).