WYKOO 64 Pcs Synthetic Filter Paper Stickers, 0.25Micron Filter Paper Stickers Used Under Mason Jar Lids For Mushroom Cultivation

It can be used in autoclaves, steam sterilizers or autoclaves. Autoclavable & Reusable ★Function：These filters are widely used by commercial producers and those involved in small family planting. You can paste it into the hole under the wide-mouth can lid. The use of these papers allows for fresh and continuous air exchange while preventing unnecessary contaminants from entering. 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