Cleans and descales by removing mineral build up on both Stadler Form Humidifiers as well as other humidifiers on the market. Easy to use - keep your humidifier clean and ensure its performance by using ZERO CALC every 2-3 weeks, depending on the hardness of your water. The water hardness can be determined by using the test strip that comes with every Stadler Form Humidifier instruction manual.
Each ZERO CALC box includes three sachets. One is used for each cleaning. Please follow instructions on the sachets. Do not run the unit while using ZERO CALC. Rinse the units thouroughly with tap water after each cleaning.