The Kärcher RM 623 is a specialized cleaner designed for stone and facades, coming in a 5 L container. This neutral solution with a pH value of approximately 7 effectively removes oil, grease, soot, dust, and mineral deposits from water-resistant surfaces such as stone walls, patios, terraces, and aluminium facades. Because it is formulated for use in high-pressure cleaners, it allows you to tackle tough outdoor grime more efficiently. This clear, yellow liquid features a fresh scent and an all-in-one protective formula that helps shield your surfaces from the effects of wind and weather. It is an environmentally conscious choice, being easily biodegradable according to OECD guidelines and ensuring a fast separation of oil and water in oil separators. This makes it a practical tool for homeowners or professionals who need to maintain the appearance and integrity of their exterior stone and metal elements.