适用于花岗石表面清洁用。BERT-27麻石去污剂，具有双重功效，去除表面污油和渗入石材内层，清理内层污澱物。麻石表面变黄，起锈，工程完工后留下的水泥污渍，通过使用强力去污剂清洗，可达到理想效果，清洗完后注意过清水，风干后可。每公升加适量清水，可使用30平方米。（特别注意：BERT-27麻石去污剂使用于大理有利于清污时间不可以长，可以用水稀释使用） 包装规格：1公升、5公升。 BERT/27 Extra Strong Detergent This is an extremely concentrated, acid-based detergent for granite, ceramic or gres. It should only be used for strongly-resistant soiling or to eliminate rust or potassium nitrate. One of its great advantages is that it forms a layer of foam that does not drip when used on vertical surfaces, so it is especially useful for the deep cleaning of wall-tiles immediately after fixing.