Crystal is a reliable sorption filter that provides basic water purification for drinking and cooking, while softening the moderately hard water. The system deeply purifies tap water from a wide range of dangerous contaminants: chlorine, heavy metals, pesticides, petroleum products, and other common toxins and allergens. Three CarbFiber block modules are manufactured using Aqualen™ — the patented ion-exchange fiber. Therefore the contact area of water and sorbents is 42 times higher than that of granular сarbon filters, while the filtration rate is four times higher.The softening cartridge KH contains ion-exchange resin and can be regenerated multiple times using salt. We recommend using softening sorption filters when water is moderately hard (limescale builds in 10-14 days). For highly mineralized water the RO filter is the best option.