Crystar^® ceramic membranes filter pool water through a unique honeycomb dead-end architecture of parallel channels with stable and well-engineered porous microstructure. This specific geometry features a high filtration area in compact filtration membrane elements (16 m2 in a filtration membrane element of 149 x 149 x 1000 mm). Each filtration element provides a filtration capacity in the range of 5 to 20 m3/h depending on the membrane pore size and pool usage. The high permeability of recrystallized silicon carbide allows for low pressure operation, typically in the range of 0.25 to 0.75 bar (2.5 to 7.5 meters of water column). As a results, excellent water quality can be obtained at low energy consumption.

The honeycomb geometry also allows for fast backwash cycles with low water consumption. Only 15-80 liters are needed during a backflush of 3 to 5 seconds to clean a Crystar^® membrane. Compared to sand filers, water usage for backwash operations can hence be decreased by as much as 70%. As a consequence, the costs of water renewal heating and chemical treatment can also be significantly lowered. The fast and frequent backwashing of the filtration membranes also contributes to the reduction of chloramines and trihalomethanes, reducing skin and eye irritation as well as the risk of diseases such as asthma and allergy due to the long-term exposure to these chlorinated compounds.