The process used for removal of all dissolved salts from water is referred to as deionization or demineralization. Deionization requires the flow of water through two ion exchange materials in order to affect the removal of all salt content. Aries Premium Purity LTOC Deionization cartridges contain media virtually devoid of any remaining TOCs. They are engineered to provide a resistivity of up to 18 MΩ and are ideal for laboratory applications and other processes where any impurity can impact measurement and results. Sized to fit standard Slim and BB housings.