Yachticon Aqua Clean sterilises drinking water on a silver ion basis and makes it durable. No chlorine, therefore completely odourless and tasteless. Dosage: large graduation mark = 100 litres water; small graduation mark = 50 litres water. Exposure time: 4 hours. Your water is germ-free for up to 6 months. For 1.000 litres. Content: 100 ml. Use biocides safely. Always read the label and product information before use. Signal word: ATTENTION Danger warnings: H410 Very toxic to aquatic organisms with long-term effects. SAFETY INSTRUCTIONS P102, P103, P273, P391, P501