Zonon Synthetic Filter Paper Stickers 20 mm Filter Patch Sticker 0.25 µm Filter Paper for Mushroom Cultivation Wide Mouth Jar Lids (96 Pieces)

I was nervous about using these over syringe filters for mycology, but I’m actually thrilled with these filters. Not only have they withstood pressure cooking but not one thing I’ve used them on has gotten any contamination. They come nicely packaged and in clean condition, they do have a very strong glue smell but it goes away after a few days , not complaining about it , smell is a small price to pay for strong air tight seal these stickers have . Excellent product 👍

Stood up to the autoclave. No contamination. 10/10

No good for mycology as they get wet when exposed to moisture over 60% humidity which allows for contamination. They're like a sponge. Also they shed their fiber material when touched. Basic fall apart when rubbed gently.

They work and stick tight.

Sticks well, but easy to take off the backing. good quality and inexpensive for the amount you get!