Elsan Blue 2L Elsan Pink 2L Concentrated perfumed toilet fluid. Antibacterial formula kills germs, neutralises odours. For all chemical toilets and cassettes. Simply add 30ml of Elsan Blue for every 10 litres in the waste tank. Conforms to British Standard 2893: 1989 Add 30ml of Elsan Pink to your top tank to clean and protect your toilet bowl when flushing. Conforms to British Standard 1040: 2005 Keeps toilets safe, clean and fresh. Total of 4 concentrated litres. Equivalent to 8 litres of standard fluid