<https://www.advancedse.com.au/product/penetrating-sealer-19l/#product>
<http://schema.org/description>
"Penetrating Sealer is an economical, no sheen, water based penetrating / impregnating sealer for all porous natural stone, tile & grout surfaces. Formulated to provide excellent protection. Perfect for very porous stone and tile. An ideal sealer for concrete, sandstone & brick. Last up to 5 years."
<https://www.advancedse.com.au/product/penetrating-sealer-19l/?add-to-cart=4178>