64Pcs 20mm Diameter Synthetic Filter disc Hydrophobic PTFE Membrane 0.3um Pore Size Strong Adhesive for Mushroom Cultivation

Specifications: Size: 20 mm in diameter Color: white Membrane material:Hydrophobic PTFE Pore size:0.3um Package includes: 16 x4sheets Synthetic filter discs Features: Waterproof ,breathable,high temperture and press resistance,reuseable. 64pcs filter sticker Included ,Great for the for all mushroom growers looking to provide a sterile growing environment with proper air exchange. These filter vent work great for a variety of growing techniques including BRF Jars, Liquid Culture, Spawn Cultivation and may more. Safe for Pressure Cooking and Autoclave Sterilization.

• Diameter:20mm,0.3um Pore size,Hydrophobic PTFE membrane ,waterproof and air exchange for Mushroom cultivation,best for mycology jar lid .
• Strong adhesive:these synthetic filter paper can be attached to the hole of mason jar lids and you need to clean and dry the surface before sticking filter patch
• High temperture resistance:these disc filters feature outstanding heat resistance and pressure resistance, which can be applied to your autoclaves,press cooker and steam sterilizer.
• High filter rate: these adhesive patches have a filtration rate of 99.97% ,can filter 0.3 μm object ,for gas exchange
• Easy to apply:breathable,durable and reusable