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Grow Bag with Micronfilter | Unicorn Type 3T

The Unicorn Type 3T is the industry standard for serious mycologists who demand the highest level of contamination control combined with reliable performance. Manufactured by Unicorn Bags—a global leader in fungal cultivation technology—this bag is trusted by hobbyists and commercial producers worldwide for grain spawn production and substrate cultivation

Availability: In stock

€1.00
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Product Description
Details

The 0.2-micron filter represents a sweet spot between contamination protection and functional gas exchange. Unlike coarser filters, the Type T filter in the Unicorn 3T provides exceptional safeguarding for grain spawn—one of the most contamination-prone cultivation stages. This precision filtration is vital when producing spawn that will be distributed or stored for extended periods.


The finer filtration also makes this bag suitable for both spawn production and fruiting substrates, offering versatility for different cultivation methods. Many professional mushroom farms and spawn producers exclusively use Type 3T bags for their spawn operations due to this reliable performance.

Key Features:

  • Ultra-Fine 0.2 Micron Filter: Equipped with a precision 0.2-micron pore-size filter (Type T), providing 90% filtration efficiency to effectively exclude even the smallest contaminants while maintaining optimal gas exchange. This finer filtration makes it particularly ideal for protecting valuable grain spawn from contamination.
  • Optimal Size for Standard Cultivation: Dimensions of 20 cm × 48 cm × 12.7 cm (or 8″ × 5″ × 19″ in imperial) with capacity for approximately 2.5–3 kg (5–7 lbs) of substrate. Perfect for growers working with standard spawn runs and mid-sized cultivation projects.
  • Autoclavable & Sterilizable: Made from 2.2–2.5 mil polypropylene film that withstands steam sterilization at temperatures up to 121°C (250°F), allowing multiple sterilization cycles for reusability and cost-effectiveness.
  • Gusseted Design for Strength & Stability: The side-gusseted construction provides a sturdy, stand-up bag after filling while maintaining a strong, reliable bottom seal that can withstand agitation and handling.
  • Grain Spawn Specialist: The Type 3T filter has become the preferred choice among professional spawn producers globally due to its superior contamination prevention and consistent performance across multiple sterilization cycles.
  • Durable Polypropylene Construction: Unicorn’s proprietary polypropylene formula remains pliable at any temperature—even after repeated sterilization—ensuring reliable performance and longevity.

Recommended Uses:

  • Grain spawn production (preferred application)
  • Substrate fruiting blocks
  • Mushroom cultivation at mid-scale volumes
  • Professional spawn distribution
  • Highly contamination-sensitive cultures


Usage Instructions:

  1. Fill the bag with your prepared grain or substrate (approximately 2.5–3 kg)
  2. Seal the bag opening securely with tape, clips, or the provided closure method
  3. Sterilize in an autoclave or pressure cooker at 121°C (15 psi) for 20–30 minutes
  4. Allow to cool completely before inoculation
  5. The 0.2-micron filter automatically regulates gas exchange during colonization
  6. Dispose after use or sterilize again for subsequent applications
Additional Info
Additional Info
Productcode gn-gb1
Weight (KG) 0.0200
Contents (ml) No
Contents No
Origin No
Sterile No

Customer Reviews

9 Item(s)

per page
A great bag Review by Irina
Rating
I am satisfied with it, as from all products from this website (Posted on 4/4/2024)
For small Kit ok Review by Christoph
Rating
For small Kit and for beginners ok! (Posted on 12/21/2023)
happy with the bags Review by Saulius
Rating
bought a bunch and loving it. Will def buy more when i run out (Posted on 2/28/2023)
WEINIG KANS OP BESMETTING Review by ERWIN
Rating
Handig met filters ingewerkt, beter als kweekzakken met gaatjes, daar die mij regelmatig (2de of 3de flush) besmettingen gaven.Prijs is zeker oke! (Posted on 9/17/2022)
Great Review by Teytum
Rating
These are the best grow bags what so ever! Highly recommend! (Posted on 11/26/2020)
The best Review by Teytum
Rating
Always and ONLY use these ones.. Not the ones with the kits.. (Posted on 8/8/2020)
Haven't tried it yet but it seems in perfect conditions Review by Axl
Rating
Fast delivery and overall good condition.. Very satisfied (Posted on 8/28/2019)
good for the first trial Review by Louis
Rating
good for the first trial, better would be have multi-pack options, in order having cheaper price, personally prefer than monotub, less risk of contamination of all your work. easily to replace with commercials plastic-bags ( don't forget make little air-wholes). (Posted on 3/11/2018)
Growbag in Ordnung, leider gibt's nur die kleine Ausführung Review by Pilzfreak
Rating
Super Growbag, allerdings gibt es nur die kleine Ausführung, aus welchen Gründen auch immer?!? Ich würde gerne bei meinem XL Kit beim 2. Flush die Growbag aus Hygenischen Gründen auswechseln...!
Dadurch bin ich gezwungen bei der Konkurrenz solch eine Growbag zu bestellen, obwohl ich diesen Shop hier bevorzuge und sehr gut finde! ;-)
Vorher Frage ich den Support an ob sie mir solch eine Bag trotzdem verkaufen bevor ich woanderst bestelle...Hoffe ihr kommt mir entgegen...
GlG
Pilzfreak
(Posted on 5/23/2015)

9 Item(s)

per page
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