HOUSEHOLD TOILETRIES HARPIC Weight: 825GM. HARPIC LIMESCALE REMOVER is a powerful and easy-to-use product that can remove limescale from concrete, brick, masonry, and other hard surfaces. This powerful tool reduces the need for harsh chemicals or extended scrubbing time, leaving your surface looking clean and shiny. this product is unique and powerful because it quickly and easily removes limescale from all types of pipes, tanks, and other water-carrying infrastructure. The product has no fumes or harsh chemicals that can cause damage to your equipment or the environment.