Synthetic Filter Discs

Synthetic Filter Discs

Synthetic Filter Discs are used by many mushroom cultivators, from those only using a few jars of spawn to act as spawn masters in commercial production to those involved in smaller home cultivation. These filter discs fit precisely on a variety of canning jars that are commonly used by today’s cultivators. Usage of these discs allows a fresh, constant air exchange but prevents the entrance of unwanted contaminates.

Please don’t be fooled!

Many companies sell “Synthetic Filter Discs” when really all they are is filter paper. These kinds of filters often can not withstand repeat usage within a pressure cooker or steam sterilizer and they have not been specifically designed for mushroom cultivation. Depending on the brand of filter paper, the filter can experience deterioration and failure.

Our filter discs come in a variety of sizes but they are all a true 1/16 of an inch thick! This equals to roughly 13 sheets of filter paper. Our discs are thicker, stronger and more stable thus preventing sagging or tearing. The thickness of our discs have withstood countless sterilizations in both commercial and hobby grows.

Our discs are made out of tightly woven polypropylene fabric which is able to be used within a pressure cooker, steam sterilizer or autoclave. They are reusable, highly durable and have a filtration rate of 99.97% and will filter down to .3 microns

Hopefully, you’re not still cutting whole filter discs into quarters simply to attach them onto a hole that you’ve drilled into a lid are you? Well if you are then the 50mm (two-inch) filter discs are especially for you. Made of the exact material as all of our filter discs and with the same 99.97% efficient filtration down to .3 microns. These filter discs measure two inches in diameter (50mm). These two-inch discs cover a one-inch hole nicely which will allow for greater gas exchange for your spawn/substrate. No more cutting and no more shredding of perfectly good discs for a one-inch hole!

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.

(Myco Supply can also have synthetic filter discs custom made to meet your needs. Contact us for more information).