Filter Discs

Synthetic Filter Discs

When sterilizing grain spawn or mushroom spawn in bulk jars, it is important to facilitate gas exchange (GE) while preventing foreign contaminants from entering the canning jars. The best and most effective way of accomplishing this is by using synthetic filter discs (SFDs). Synthetic filter disks are specifically manufactured to prevent spores and other contaminates from passing through the filter, while still allowing gas exchange. They allow for gas exchange while providing 99.97% efficiency filtration down to 0.3 microns and are autoclavable safe. A Synthetic filter disc is made from similar material used for filter patches on mushroom grow bags or an All In One Mushroom Grow Bag.

What size Canning Jar Lids can you use with Synthetic Filter Discs?

50mm x 1.59mm Synthetic Filter Discs are designed for those who drill their own holes in their lids.

70mm x 1.59mm Synthetic Filter Discs are designed for Regular Narrow Mouth Canning Jar Lids.

90mm x 1.59mm Synthetic Filter Discs are designed for Wide Mouth Canning Jar Lids.

How to Use a Synthetic Filter Disc?

To use this filter, simply fit it snugly under the jar lid, or place it on top of the jar lid and secure it with the jar band.

How to add a Self Healing Injection Port to a Synthetic Filter Disc?

Installing the injection ports is effortless. Simply drill a hole in your plastic canning jar lid or synthetic filter disc and glue the self healing injection ports using either a silicone or high-temperature-based adhesive. It's that simple!

How to make a Liquid Culture Jar Lid or Liquid Culture Jar with a Synthetic Filter Disc?

Make sure a hole is in the liquid culture lid for optimal gas exchange and simply fit it snugly under the jar lid, or place it on top of the jar lid and secure it with the jar band.

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