Blast away stains with the StoneCare4U Essential Brick Acid Cleaner. It is a high-performance formula for cleaning all types of acid-resistant surfaces, both indoors and outdoors. Importantly, it is a powerful, fast-working formula that dissolves and removes surface residues such as mortar and cement, efflorescence, encrusted and ingrained dirt, as well as light calcium and limescale deposits. All surfaces it is applied to must be acid-resistant, such as ceramic tiles, porcelain, brick, clay and quarry tiles, terracotta, concrete and many types of natural stones. How To Apply: Remove any loose debris from the work surface before you start and ensure adequate safety wear, i.e. gloves, suitable protective eyewear, face mask and clothing. The cleaner is to be used neat or diluted up to 1:5 with clean water – always perform a small test area to determine a suitable dilution rate and dwell time. Firstly, wet the surface, then secondly, apply the cleaner, neat or diluted with water up to 1:5. The dilution rate will be dependent on the extent of the contamination. Above all, please note that this product is not suitable for acid-sensitive surfaces such as enamel, zinc, chrome, stainless steel, polished marble limestone, lacquers, etc. If using the brick cleaner indoors, ensure good ventilation during and after use and that no vapours remain in the room. After that, if the problem persists, it may be necessary to reapply the solution, diluting to a stronger mix and working in smaller areas. Please Note: Importantly, always try the product in an inconspicuous area before use. Avoid contact with clothes, materials and fabrics, as this will cause damage. Keep away from carpets and soft furnishings. Always wipe up spillages and rinse thoroughly with cold water. Coverage: 10 to 40m² per litre. Coverage will vary depending on the kind and stubbornness of the deposits. Quantity: 5L. Pack of two.