Blue Myco Medium Spawn Bags 10T 0.22 Micron Filter 5"X4"X19" (100-Pack)
Blue Myco Medium Spawn Bags 10T 0.22 Micron Filter 5"X4"X19" (100-Pack) is backordered and will ship as soon as it is back in stock.
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Description
Description
Blue Myco Medium 10T Spawn Bags are the medium-format grain bag we run in our own lab. 5" x 4" x 19" gusseted, built from 3.3 mil (85µm) polypropylene with a 0.22 micron filter patch — and sold 100 to a pack rather than the usual 50.
- 5"×4"×19"gusseted
- 3.3 mil85µm film
- 0.22 micronfilter patch
- Reinforcedseals
- 100 bagsper pack
What you're getting
At 3.3 mil this is the thickest film in our medium-format lineup. That matters most at the seals and corners, where thin bags develop micro-tears after repeated handling through filling, sterilizing, shaking and incubation. The film also stays pliable after an autoclave or pressure cooker cycle rather than stiffening and cracking.
The 1.5" x 1.5" filter patch is rated to 0.22 microns, positioned for gas exchange while the grain colonizes.
How to run a grain bag
- Fill with hydrated, drained grain, keeping the filter patch clear of wet grain.
- Fold the top over and clip it — do not heat-seal before sterilizing, since the bag needs to vent.
- Pressure sterilize, typically 90 minutes to 2 hours at 15 psi. Keep bags off the bottom of the pot and away from direct element contact.
- Cool completely to room temperature before inoculating. Warm grain kills culture.
- Inoculate through the filter patch with an alcohol-wiped needle, or add a self-healing injection port.
- Break and shake once the grain shows even colonization, then incubate until fully run.
Specifications
| Spec | Detail |
|---|---|
| Brand | Blue Myco Systems |
| Format | 10T (medium) |
| Dimensions | 5" x 4" x 19", side gusseted |
| Material | 3.3 mil (85 µm) polypropylene |
| Filter | 1.5" x 1.5", 0.22 micron |
| Seals | Reinforced |
| Pack size | 100 bags |
| SKU | BM11 |
How our spawn bags compare
We stock both Unicorn and Blue Myco. Here are the filtered grain bags side by side — the specs, so you can pick on the numbers that matter to your process.
| Bag | Size | Thickness | Filter | Pack |
|---|---|---|---|---|
| Blue Myco Medium 10T (this bag) | 5" x 4" x 19" | 3.3 mil (85µm) | 0.22 micron, 1.5" x 1.5" | 100 |
| Blue Myco Large 3T | 8" x 5" x 19" | 3.0 mil (80µm) | 0.2 micron, 1.5" x 1.5" | 50 or 800 |
| Blue Myco XLS-T | 10" x 5.5" x 24" | 3.3 mil (85µm) | 0.22 micron, 2" x 4" | 50 |
| Unicorn Medium 10T | 5" x 4" x 18" | 3.0 mil | 0.2 micron, 1.5" x 1.5" | 50 or 1,000 |
| Unicorn Large 3T | 8" x 5" x 19" | 2.2 mil | 0.2 micron, 1.5" x 1.5" | 50 |
Fruiting bags are a different tool — double patch, 0.5 micron, meant for fruiting directly in the bag rather than running grain. Those are listed separately.
On the T numbers: 3T and 10T are bag-type designations, not thicknesses. In our catalog 3T is the large 8" x 5" x 19" format and 10T is the medium 5" x 4" format. Check the thickness column above rather than reading it off the name.
Frequently asked questions
How many bags come in a pack?
100. Most medium spawn bags are sold 50 to a pack, so check the count when you are comparing prices between listings.
What is the difference between a 0.2 and a 0.22 micron filter?
Very little in practice. Both are fine enough to hold out airborne contaminants while letting the grain breathe, and both are standard ratings for sterile filtration. Pick on size, thickness and pack count rather than on the difference between these two numbers.
Can I pressure sterilize these bags?
Yes, that is what they are built for. The polypropylene stays flexible through the cycle rather than stiffening. Keep bags off the bottom of the pot and away from direct contact with the heating element, and fold the top rather than sealing it so the bag can vent.
How do I inoculate without an injection port?
Inject through the filter patch with an alcohol-wiped needle. The patch material closes around the needle well enough for a single entry. If you plan to inject the same bag more than once, add a self-healing injection port instead.
Is this the same as the double patch fruiting bag?
No. This is a single patch grain bag with a 0.22 micron filter, built for colonizing grain. The double patch fruiting bag has two 0.5 micron patches for much higher air exchange and is meant for fruiting directly out of the bag.
Should I buy Unicorn or Blue Myco?
We carry both and use both. Unicorn is made in the USA by the company that invented the filter patch bag, and it is the bag most growers are used to. Blue Myco is the line we run in our own lab. The comparison table above lays out the sizes, thicknesses and filter ratings so you can decide on the specs rather than the branding.
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