Deep-penetrating stain remover for absorbent natural stone. Tenax Zero Purple is a water-based active chlorine solution engineered for removing existing stains from absorbent natural stone surfaces — marble, granite, and select rough-finish ceramic — while helping prevent new spots and shading from forming. Non-aggressive on polished natural stone finishes when used as directed. Apply by roller or brush, allow to dwell 30–60 minutes, then rinse thoroughly. Coverage: approximately 160–270 sq. ft. per liter. Store below 77°F. ⚠️ Important: Contains active chlorine. Avoid contact with metals and certain plastics. Not recommended for onyx or other alkali-sensitive materials. Always test on a small hidden area first. Key Features Deep-penetrating stain removal on absorbent natural stone Helps prevent new spotting and shading after treatment Non-aggressive on polished marble and granite when used as directed Water-based active chlorine formula Coverage: 160–270 sq. ft. per liter Compatible Surfaces Marble and granite (primary application) Select rough-finish ceramic stoneware Not recommended for: onyx, alabaster, or other alkali-sensitive stone How to Use Ensure the surface is clean before application Apply evenly using a roller or paint brush Allow to dwell for 30–60 minutes Rinse thoroughly with water Repeat with longer contact time if stains remain Always test on a small hidden area first Works Well With BrioAction 3 Professional Stain Remover — for mold, algae, and atmospheric buildup before or after Zero Purple treatment Sealer & Wax Remover — strip old sealer before stain treatment for better penetration Tenax Ager — seal and enhance stone after stain removal Skudo Stone Sealer — clear impregnating sealer to protect stone after treatment Tenax Rust Remover Liquid — for rust stains on unpolished stone ProToolHaus – Your Certified Tenax USA Distributor When you buy from ProToolHaus, you’re ordering from a certified distributor of Tenax USA. We carry the full lineup and stand behind every product with expert guidance, fast fulfillment, and the kind of support that only comes from working in the stone industry every day.
