A water ioniser is a device used to alter the pH level of water and to separate it into alkaline and acidic water. It uses electrolysis technology to ionise the water and produce negatively and positively charged ions. Alkaline water is often used as drinking water and is said to have an alkalising effect on the body, whilst acidic water can be used for cleaning purposes. Water ionisers aim to alkalise the water and alter its taste.

On the other hand, a reverse osmosis system is a system based on the principle of reverse osmosis, as described previously. It uses a semi-permeable membrane to remove impurities such as salts, minerals, heavy metals, bacteria and viruses from the water. The process of reverse osmosis produces clean, filtered water that can be used for various purposes such as drinking, cooking or industrial applications. Reverse osmosis systems aim to rid the water of a wide range of contaminants and ensure high water quality.

The main difference between a water ioniser and a reverse osmosis system lies in how they work and what they are designed to achieve. Whilst a water ioniser is primarily designed to alter the pH level of the water and provide potentially alkaline water, a reverse osmosis system focuses on removing contaminants and providing clean, filtered water. The choice between the two depends on individual requirements and preferences – whether one prefers water ionisation or comprehensive purification.