Poolsel Swimming Pool Salt is a specialist salt for use in swimming pools.\nThis is a very pure, refined, coarse grade of sea salt, with low sulphate content making it perfect for your swimming pool. Made to EN16401 compliance standards without any damaging impurities, making Poolsel the undisputed market leader in swimming pool salt. Add directly to your pool, Poolsel dissolves quickly and without residue. \nPoolsel Swimming Pool Salt is ideal for the production of chlorine by salt electrolysis through electrochlorination. Electrochorination produces chlorine at a constant rate meaning its kinder to eyes, hair and skin without the strong smell associated with adding chlorine to your pool. \nIt is not suitable for membrane electrolysis, for which we recommend Soft-Sel Pluss Pool Salt or Hydrosoft Granular Salt. A membrane electrolysis system is typically used by commercial swimming pools with salt added to the unit itself rather than dissolved directly into the pool. \;