Filter discs and wire mesh pieces | Haver & Boecker
Amazon.com: Synthetic Filter Discs 90 mm, Wide Mouth Size, for a Buchner Funnel, Mushroom Cultivation, High Temperature and High Pressure Resistance (16 Pieces) : Industrial & Scientific
12 Synthetic Filter Discs for" Wide Mouth" 87mm jar lids Used for Mushroom Cultivation: Amazon.com: Industrial & Scientific