❤[100PCS 90 mm Synthetic Filter Discs]: Cellulose filter paper about 3.54 inch(90mm) in diameter, 0.00 inch(0.1mm) thick, 100 pieces.
❤[High Quality]: Quantitative ashless filter papers are made from high quality fibres and have good role to pressure and heat.
❤[Breathable]: Filter papers ensure the circulation of air inside and fresh air outside and are indispensable for mushroom cultivation.
❤[How to Use]: Qualitative filter paper can be installed on the hole of the lid of a wide mouth can; please note that the smooth surface of the synthetic filter disc faces the liquid, and the surface needs to be cleaned and dried before use.
❤[Wide Application]: Rubber stoppers are widely applied in buchner funnels and can be cut into wide mouth sizes, suitable for mushroom cultivation; DIY them into normal mouth size or other smaller sizes.