Grout Cleaner – 500 ml HG Size: 500 ML Assembled Product Length: N/A Assembled Product Height: N/A Assembled Product Width: N/A . Highly concentrated alkaline buffered liquid cleaner Removes encrusted dirts from grout lines and tile Can be used on all sorts of wall and floor grouts, in-between ceramic tiles, quarry tiles, slate, and other stones Not for use on grout lines in-between calcareous natural stones, like marble, travertine, terrazzo, etc. 90% biodegradable 10-15 m2 (100-175 sq/ft) per 1/2 litre usage Toxins may irritate user CONTAINS: 1.14g/ml Approximately 12.4 pH Compositions: nonionics, tensides, phosphates, silicates Highly concentrated alkaline buffered liquid cleaner||Removes encrusted dirts from grout lines and tile||Can be used on all sorts of wall and floor grouts, in-between ceramic tiles, quarry tiles, slate, and other stones||Not for use on grout lines in-between calcareous natural stones, like marble, travertine, terrazzo, etc.