{"product_id":"lithofin-bero","title":"Lithofin BERO","description":"\u003cp\u003eOrange-brown rust dots start spreading across your new quartzite kitchen island and no alkaline cleaner shifts them. BERO steps in, dissolving iron oxide within minutes and washing away without leaving etch marks on acid-resistant stone.\u003c\/p\u003e\n\u003ch2\u003eWhat BERO Does\u003c\/h2\u003e\n\u003cp\u003eBERO is an acidic specialist cleaner for natural stone. With a pH of 1.5, its inorganic acids convert insoluble iron oxide into water-soluble salts and break down cement smears by attacking calcium silicate bonds. You wipe, wait 2 minutes, and watch rust, cement haze, and iron discoloration lift off basalt, granite, and quartzite at 15 m²\/L.\u003c\/p\u003e\n\u003ch2\u003eWhen to Use\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUndiluted on rust spots in a bathroom built with basalt - 1:1 (neat) \u003ca href=\"\/en-ie\/pages\/problem-rust-stains\"\u003e\/pages\/problem-rust-stains\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eNeat removal of cement film on rough granite patio - 66.67 ml\/m² \u003ca href=\"\/en-ie\/pages\/problem-cement-residue\"\u003e\/pages\/problem-cement-residue\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eNeutralising brown iron streaks on honed gabbro floor tiles - undiluted\u003c\/li\u003e\n\u003cli\u003eCleaning quarry-sawn slate window sills after grouting - undiluted \u003ca href=\"\/en-ie\/pages\/problem-general-cleaning\"\u003e\/pages\/problem-general-cleaning\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eClearing efflorescence on acid-resistant concrete steps - undiluted \u003ca href=\"\/en-ie\/pages\/problem-efflorescence\"\u003e\/pages\/problem-efflorescence\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Apply\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eWet the surface slightly; this limits deeper acid penetration. (PT5M)\u003c\/li\u003e\n\u003cli\u003eSpread BERO undiluted with a white nylon pad or sponge at 66.67 ml\/m². (PT5M)\u003c\/li\u003e\n\u003cli\u003eAllow 2-5 minutes contact; scrub lightly if stains persist. (PT5M)\u003c\/li\u003e\n\u003cli\u003eRinse twice with plenty of clean water until pH is neutral. (PT5M)\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eCoverage is 15 m² per litre. No drying time: rinse immediately after reaction.\u003c\/p\u003e\n\u003ch2\u003eSurface Compatibility\u003c\/h2\u003e\n\u003cp\u003eBERO performs best on \u003ca href=\"\/en-ie\/pages\/stone-basalt\"\u003ebasalt\u003c\/a\u003e, \u003ca href=\"\/en-ie\/pages\/stone-granite\"\u003egranite\u003c\/a\u003e, \u003ca href=\"\/en-ie\/pages\/stone-slate\"\u003eslate\u003c\/a\u003e, \u003ca href=\"\/en-ie\/pages\/stone-bluestone\"\u003ebluestone\u003c\/a\u003e, \u003ca href=\"\/en-ie\/pages\/stone-sandstone\"\u003esandstone\u003c\/a\u003e, and \u003ca href=\"\/en-ie\/pages\/stone-concrete\"\u003econcrete\u003c\/a\u003e. These materials resist low-pH attack because of their silica-rich matrices (Mohs 4-7). The acid dissolves iron without etching their surfaces. Do not use on marble, limestone, or any stone that reacts with acid.\u003c\/p\u003e\n\u003ch2\u003eChoosing the Right Product\u003c\/h2\u003e\n\u003cp\u003eFor day-to-day upkeep after rust removal, use Lithofin PRO Clean \u0026amp; Care. For long-term oil and water repellency, seal with Lithofin PRO Stain-Stop.\u003c\/p\u003e\n\u003ch2\u003ePro Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlways pre-wet joints; mortar absorbs acid faster than stone, preventing joint burn.\u003c\/li\u003e\n\u003cli\u003eUse warm water (30 °C) for rinsing; higher temperature speeds neutralisation by 20%.\u003c\/li\u003e\n\u003cli\u003eTest a 10 × 10 cm patch first; colour change indicates hidden calcite veins.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lithofin","offers":[{"title":"standaard","offer_id":56880126361932,"sku":"017-11-B","price":23.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1037\/6485\/3068\/files\/017.webp?v=1772467274","url":"https:\/\/ixstone.com\/en-ie\/products\/lithofin-bero","provider":"adh23084u","version":"1.0","type":"link"}