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Autoclavable BioDegradeable Gusseted Bags - Type 3B

Autoclavable BioDegradeable Gusseted Bags - Type 3B

$35.00
$35.00
Sale Sold Out

Professional Mushroom Cultivation Bags for Sterilized Substrates

Designed for mushroom cultivation, these Type 3B gusseted grow bags are made from 2.2 mil polypropylene and can withstand the high temperatures required for sterilizing mushroom substrates.

The built-in 5-micron filter patch allows gas exchange during colonization while helping protect the substrate from airborne contaminants.

Their gusseted design expands as the bag is filled, making them ideal for preparing blocks of supplemented sawdust, grain, and other sterilized mushroom substrates.

🍄 Great For

  • Sterilized supplemented sawdust
  • Mushroom fruiting blocks
  • Grain spawn
  • Hardwood-based substrates
  • Indoor mushroom cultivation
  • Home and commercial mushroom farms

🔬 Built-In Filter Patch

Each bag includes a 1.5" × 1.5" filter patch with 5-micron filtration.

The filter allows the growing mycelium to breathe while the bag remains closed during colonization.

♨️ Autoclavable

These polypropylene bags are designed for sterilization, making them suitable for use in an autoclave or pressure sterilizer when preparing mushroom substrates.

After sterilization, allow the substrate to cool completely before inoculating.

🌱 Biodegradable Design

These bags are designed to provide the durability needed during mushroom cultivation while offering a biodegradable alternative to conventional mushroom grow bags.

📦 What's Included

20 Type 3B Gusseted Bags

Bag Specifications:

  • Size: 8" × 5" × 19"
  • Material: 2.2 mil polypropylene
  • Filter size: 1.5" × 1.5"
  • Filter rating: 5 micron
  • Hole: L
  • Quantity: 20 bags

⚠️ Sterile Technique Required

After sterilization, bags should be handled and inoculated using appropriate clean or sterile technique. The filter helps protect the substrate during colonization, but it does not eliminate the need for proper laboratory practices.

How many bags are included?
Each package contains 20 Type 3B gusseted mushroom cultivation bags.
What size are the bags?
Each bag measures approximately 8&quot' × 5&quot' × 19&quot'.
What are these bags made from?
They are made from 2.2 mil polypropylene (PP).
Are these bags autoclavable?
Yes. These bags are designed to withstand the sterilization temperatures used when preparing mushroom substrates.
Do the bags have filter patches?
Yes. Each bag has a 1.5&quot' × 1.5&quot' filter patch rated at 5 microns.
What does the filter patch do?
The filter allows gas exchange during mycelial colonization while helping protect the substrate from airborne contaminants.
What can I grow in these bags?
They can be used for grain spawn, supplemented sawdust, hardwood substrates, and mushroom fruiting blocks.
Can I sterilize substrate directly inside the bag?
Yes. The bags are designed to hold mushroom substrate during sterilization.
What does gusseted mean?
Gussets allow the sides and bottom of the bag to expand when filled, creating more room for substrate and making it easier to form cultivation blocks.
Are these bags biodegradable?
Yes. These are biodegradable cultivation bags designed for mushroom production.
Do I still need sterile technique when using filtered bags?
Yes. The filter helps protect the substrate during colonization, but proper sterile technique is still important when inoculating sterilized substrate.
Are these suitable for commercial mushroom cultivation?
Yes. They can be used by both home cultivators and commercial mushroom growers.
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