Prime Water membrane filters consist of a bundle of hollow fiber membranes in a tube, where the space between the membranes and the tube has been hermetically sealed with an epoxy resin. This is a very efficient design with no unused space in the cartridge, as is the case in helically wound cartridges.
The low pressure drop across the membranes enables a very compact construction and high flow rates at point of use applications.
The Prime Water Membrane filters meet the highest purification standards, for example the US EPA standard and protocol for microbiological water purifiers.
As a result of the broad and unpredictable variations in the nature and concentration of microparticles in the water, the service life of a "dead end" membrane filter will depend on local water conditions and the presence of pre-filtration. The service life of a "dead end" membrane filter can be assessed by measuring the concentration of microparticles by means of the SDI (Silt Density Index) method.
Click here for the results of the SDI test method.
Figure 1 - Dead-end filtration