Durr MD555 Cleaner Special Detergent for Suction 2.5LInformation MD 555 is a non foaming acidic cleaner meant for dental suction systems and drainage lines. It is especially helpful in areas with hard tap water or where there are insoluble salts. It works well in drainage lines that dont have a good slope. This cleaner is also recommended for devices like air polishing units. Using MD 555 regularly helps prevent and dissolve deposits and blockages. MD 555 is suitable for systems with amalgam separators