Zonon 64 Pcs Synthetic Filter Paper Stickers 0. 3 Um Filter Disc Mushroom and 100 Pieces Pressure Resistance Vial Rubber Stopper Injection Ports for Mushroom Cultivation(7.6mm Diameter)

good they work

The media could not be loaded. These filters worked great on my colonisation jars the injection ports work just as well

I used these to modify lids on glass jars for mushroom grain spawn. I used gasket sealant to seal the injection ports and only used 1 filter patch per jar (any old pasta jar) which despite the other reviews, worked fine on every jar. Cover the lids with foil and they survived the pressure cooker (instant pot) just fine. Every jar had clean and healthy mycelium 2 weeks after innoculation so these did exactly what I needed them to do.

The stoppers and filters are in one bag... so it's easy to assume that the filters have not been sent as they are obscured by the bulk of the stoppers.I have not used any of the items, so can not comment on quality or performance.

Well packaged, nice item.

Very nice, imo too many rubbers, would be nicer to see reduced size of these for smaller price or at least vary the sizes for better multi use. but again only got it for filter patches which are excellent and help a lot instead of playing with micropore tape

Beware if you intend to use these filters for mycology. My mycelium colonisation was choked due to insufficient GE, and as a result extremely slow. I actually had to pop the lids open for colonisation to resume, which is risky.Since then I’ve opted for two air vents per jar instead of one, which is better but still slower than polyfill.

Product itself was good, however, only 32 of the 64 filters were in the package hence the 3 starsUpdate: the filters were all there just packed together back to back.Great filters, stayed stuck firmly on after pressure cooking.