-Mushroom Growing Bags, 0.5 Micron Filter, 3 Mil Polypropylene, Large Size 8" X

Sealable and autoclavable, 3 mil polypropylene bags with microporous filter patches that allow gas exchange but preclude the passage of contaminants, can be used for both mushroom growing and spawn .
They are widely used by mushroom growers throughout the world. We use them for mushroom spawn incubation in our farm for a long time. You can seal them with an impulse sealer, or just tie to seal them. Those bags are durable and can be reusable in most circumstances.
These bags are gusseted on both sides, allowing them to hold more material. The Size makes those bags ideal for using pressure cookers to sterilize. You can use them to expand your cultures or replace the jars. Substrates are easy to view, and easy to handle.
Suggested Sterilization Times at 15 PSI:
5 LBS Grain Bags---120 mins
5 LBS Sawdust Blocks---150 mins
*******Fill with an adequate amount of water( at least 2 inches of water) into the pressure cooker . You need enough water to last the full duration of the sterilization process. In most cases, melted bags are caused by no enough water.**********