Cement remover descaler rc-10 5 l. formulated with a strong acid base (ph 0-1, density 1.05 kg/l). quickly and effectively removes cement and mortar residues from ceramic tiles, as well as efflorescence on brick, face brick, terracotta, and acid-resistant surfaces. approximate orientative coverage: 2 m²/l (undiluted), 12 m²/l (diluted 1:1 with water), and 40 m²/l (diluted 1:5 for general cleaning)