- Integrated Self-Healing Injection Port: Features a high-temperature silicone injection port (SHIP) allowing clean, needle-puncture inoculation with liquid cultures or spore syringes without risking airborne contamination.
- Medical-Grade 0.2 Micron Filtration: Fitted with a high-surface-area 0.2-micron breathable filter patch to facilitate optimal fresh air and carbon dioxide gas exchange while blocking mold, wild yeast, and bacteria.
- Heavy-Duty Autoclavable Polypropylene: Built from rugged, industrial-strength polypropylene material designed to withstand high-pressure steam sterilization cycles in autoclaves and pressure cookers without melting or tearing.
- High-Capacity Side Gusset Design: The 10cm x 8cm x 50cm dimensions open up with expandable side gussets, maximizing substrate volume capacity and providing a stable, upright structure for efficient shelf spacing.
- Seamless Baseline Seal: Engineered with an ultra-thick, reinforced bottom heat-seal to reliably hold heavy weights of hydrated grain, sawdust blocks, or fruiting substrates without splitting.
Professionalize your mushroom cultivation workflow with the STS Heavy-Duty Gusseted Spawn Bags. This premium 10-pack of cultivation bags is designed specifically for cleanroom cultivation, eliminating the need for bulky jars and allowing growers to scale up production seamlessly. Each bag comes equipped with a built-in self-healing silicone injection port (SHIP), allowing you to introduce liquid cultures or spore solutions cleanly using a standard needle without ever opening the bag to ambient air.
Featuring an integrated 0.2-micron high-performance filter patch, these bags ensure constant, unrestricted gas exchange so your mycelium can breathe freely while keeping microscopic competitor spores and contaminants firmly locked out. The expandable side-gusseted geometry allows the bag to sit completely upright during filling, sterilization, and incubation, ensuring uniform heat distribution inside your pressure cooker or autoclave.
To use, fill the bags with your chosen grain or substrate, leaving ample headroom at the top. Fold the top of the bag neatly to protect the filter patch, and sterilize according to standard pasteurization or sterilization protocols. Once fully cooled down to room temperature in a sterile environment, wipe the silicone injection port thoroughly with isopropyl alcohol before piercing to inoculate. Seal the top of the bag using an impulse sealer or heavy-duty bag clips to secure your sterile field.
Technical Specifications
Material: Heavy-Duty Autoclavable Polypropylene
Dimensions (L x W x H): 50 cm x 10 cm x 8 cm (Gusseted)
Filter Pore Size: 0.2 Micron (um)
Inoculation Method: Self-Healing Silicone Injection Port (SHIP)
Sterilization Compatibility: Fully Autoclavable / Pressure Cooker Safe
Maximum Temperature: Up to 126 C Standard Steam Sterilization
Pack Quantity: 10 Bags
What's in the box
10 x Mushroom spawn bags
