High quality sanitation concentrate for the fresh water tank in chemical toilets: Ensan Rinse is added to the fresh water tank (16 litre volume) of the chemical toilet. You need just 100 ml of Ensan Rinse per 16 litres of fresh water. Effectively cleans the bowl and slider. Removes scale. Prevents the build-up of chalk. Prevents the build-up of algae. Ensures that the stop valve works perfectly. Cares for the rubber sealants. For hygiene and comfort when using your chemical toilet: removes unpleasant odours, reduces the build-up of gas, contains germicidal ingredients, has a fresh, pleasant scent. Ensan Rinse has a fresh lavender scent.