Item #: FD1
Availability: In Stock
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These are the synthetic filter discs that are featured on our Quick Colonizing 5-grain Jars. They are thick reusable and have a filter level of .2 microns, the highest level of filtration available. These are for any wide-mouth canning jars. The self-healing injection port is made from a special blend of RTV high temp silicone and a polymer mix.

  • 6 Filter Discs with self-healing ports
  • 90mm Wide Mouth Jar sized
  • .2 Micron Filtration level
  • Reusable
Price: $10.00

    Quantity:
    These are the synthetic filter discs that are featured on our Quick Colonizing 5-grain Jars. They are thick reusable and have a filter level of .2 microns, the highest level of filtration available.

    These synthetic filters discs fit precisely on any "wide mouth" 90mm canning jar which are commonly used by today's cultivators. Usage of these discs allows a fresh, constant air exchange while preventing the entrance of unwanted contaminates. Use them in place of jar lids, or just drill a hole in the lid, and place the discs under the lid.

    The self-healing injection port is made from our unique blend of RTV high temp silicone and a polymer additive mix. This blend allows for great adhesion and does not melt when inserting a hot needle.


    Overall Customer Rating of 4 Reviews:

    Filter Disk

    Rating:
    Pros:
    • Cheap
    • 100% effective
    Cons:
    • None
    I use these with 100% success to grow my mushroom cultures. I even reuse them and they never fail. This is a quality product and worth every penny.

    These things are great.

    Rating:
    Pros:
    Cons:
    My homemade jars always took off in the initial stage and slowed down and or stopped later on. It was very frustrating, I was following directions to the "T" and it wasn't working. I began to think that air exchange could be the culprit as it was the only thing left to consider. I bought these counting on them to allow more air exchange and boy did they do the trick. I use these as the lid on the jars and nothing else. It's great to see the jars growing at the same pace through out the incubation process. With the self healing port I don't even use a box for sterility. I wipe the syringe down with alcohol and heat the needle. I wipe the injection port with alcohol prior to inserting the needle and make sure that I have an alcohol swab on the port as I remove it. How much easier could it be!

    NH

    great product

    Rating:
    Pros:
    • Easy peasy!
    • can re-use these filters
    Cons:
    These discs are great! What I did was punch three holes in the mason jar lid with a Philips screw driver. One hole directly in the center where I could inoculate with a spore syringe (the self healing port with these filters is directly in the center so you know where to punch the hole- punch it right where the "dimple" is in the lid) and two hole on each side of the center hole, about an inch away, to allow gas exchange for the growing mycelium. Well it has been 8 days at 83 degrees F and the sterile rye grain is colonizing very nicely. What is cool (I will try this soon) is that if you use Midwest's liquid culture kit with the 60cc syringe (find in "supplies."), you do not have to open any jars, essentially ensuring 100% success. Inject 5cc of spore syringe into the liquid culture... let mycelium form for 10-14 days or so... then use the 60cc syringe to suck up "liquid mycelium" and inject into jars of sterile rye grain using the method I mentioned above, flaming the needle between jars. Only 5cc of liquid mycelium per jar of grain will allow you to inoculate 12 jars. Not having to open any jars is the key as most contamination occurs at that point!
    Thanks again for some awesome products Midwest.

    NC

    much easier than using lids

    Rating:
    Pros:
    Cons:
    These are perfect; keeping out mold spores while allowing plenty of air circulation. So much easier!!

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