<https://www.masiyelabs.co.za/product/buchner-funnel-porcelain-70mm/>
<http://schema.org/description>
"Buchner Funnel, Porcelain 70mm. This buchner funnel has a fixed perforated plate, straight sides, and slightly tapered stem. For easy clean up, the funnel is fully glazed, except for top edge."
<https://www.masiyelabs.co.za/product/buchner-funnel-porcelain-70mm/>