Synthetic Filter Discs (SFDs)

Synthetic Filter Disks are a specially made, high density filters used for filtering spawn jars/mason jars. They provide optimum air-exchange for your mycelium whilst keeping contaminants at bay. Used by professionals world-wide for more consistent results during spawn production.

We receive many emails a month from people asking why their spawn is getting contaminated and after a few emails back and forth, about 50% of the time, we find out that poor jar filtration and/or inadequate gas exchange is the culprit.

• Specially made for mushroom spawn production
• Premium Quality
• Can be used repeatedly, forever.

• More reliable than micropore tape or polyfill
• 99.97% Filtration efficiency down to 0.22μm
• Fits regular and wide mouth mason jars
• Optional small disk for lid modification

Take the guesswork out of spawn production and use what the professions use to get the job done right.