CleanPrince Cistern cleaner descales and disinfects toilet cisterns and thereby extends the service life of the mechanics, prevents odor formation and keeps seals supple with protective additives. This product falls under the regulation of the Biocides Directive 98/8/EC. Use biocides safely. Always read marking and product information before use. BAuA Rg.No.: N-113519 Hazard information: H290: Can be corrosive compared to metals. H315: causes skin irritation. H318: causes severe eye damage. H412: Harmful for water organisms, with long -term effect. H315 causes skin irritation. Safety instructions: P102: must not get into the hands of children. P280: Protective gloves / protective clothing / eye protection / face protection. P305 + P351 + P338: When contacted with the eyes: Rinse with wat.