When using vitrified bricks, surface contamination can occur due to improper handling or exposure to various substances. Here are some effective cleaning methods for common types of stains:
First, for stains caused by cement, scale, water rust, or rust spots, you can use a solution of hydrochloric acid or phosphoric acid. Apply the solution and scrub thoroughly, repeating the process if needed.
Second, for glue or ink printing stains, start by soaking the area in a 20%-40% sodium hydroxide (NaOH) solution for 24 hours. Then wipe it with a cloth. After that, apply a 30%-50% hydrochloric acid (HCl) solution and let it sit for 30 minutes before wiping again with a clean cloth.
Third, for lime scale, an acidic cleaner is recommended. This helps dissolve mineral deposits effectively.
Fourth, for ice cream stains, an alkaline cleaner can be used to break down the residue.
Fifth, for ink, mold from anti-fouling wax, or mildew, use a diluted sodium hypochlorite solution (commonly known as bleach). Simply apply the solution to the affected area and let it sit for a few minutes before wiping it away.
Sixth, for paint, oil stains, oily markers, or a layer of anti-fouling wax, use an alkaline cleaner or an organic solvent such as acetone or triethylene. These products help lift and remove stubborn stains.
Lastly, for tea, fruit, coffee, sauce, or leather shoe stains, a diluted sodium hypochlorite (bleach) solution works well. Soak the stained area for 20-30 minutes, then wipe it with a cloth. For deeper stains that have penetrated the brick over time, you may need to extend the soaking time to several hours.
Always test any cleaning solution on a small, inconspicuous area first to ensure it doesn’t damage the surface. Regular maintenance and prompt cleaning can help preserve the appearance and longevity of your vitrified bricks.
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