64pcs Synthetic Filter Paper Stickers-20mm Diameter,0.25Micron Filter,Used For Mushroom Cultivation, Place Under The Mason Jar Lids

Features

• Item Package Quantity: 64pcs filter paper for mushroom cultivation
• Size: 0.25 microns filter, 20mm diameter.It can let in fresh air and avoid some bad items.
• Good material：These filter papers are resistant to high temperature and high pressure. It can be used in autoclaves, steam sterilizers or autoclaves.Autoclavable & reusable
• Instructions for use：You can paste it into the hole under the wide-mouth can lid. Smear the surface, and then paste the sticker. The use of these papers allows for fresh and continuous air exchange while preventing unnecessary contaminants from entering.
• Scope of application：These filters are widely used by commercial producers and those involved in small family planting.