The StayPure capsule is an innovative water preservation, prevention and protection technology, created for use with potable/tap water only. It is designed to improve the taste and odour of your water, whilst keeping it purer, fresher and safer for long periods of time. This is achieved by promoting and maintaining freshness and balancing pH/alkalinity while mineralizing the water. In addition, StayPure absorbs and adsorbs trace contaminants at the same time oxidises the water preventing the formation of bacteria.