Stop using plastic water bottles and fight limescale effectively with EM ceramic beads. An ecological, economical and sustainable solution to rediscover tap water and fight against limescale. Multi-use, 100% natural and compostable, they revitalize tap water and reduce its unpleasant taste. Use in decanter, kettle, water bottle, coffee maker, and household appliances. Exceptional durability: more than 10 years. Sold in bulk Composed of clay fermented with effective natural microorganisms and fired at 1200° C. Tubular shape. Original product from the work of Professor Teruo Higa Sold in bulk. Delivered with its exhaustive manual in recycled paper size A6.