1、 Clearly define filtering requirements

Determine the filtering medium: First, clarify whether it is filtering liquids (such as water, oil) or gases. Different media require different types of filter cartridges.

Understand the types of pollutants: Understand the types and concentrations of pollutants in the medium to be filtered, such as heavy metals, suspended solids, microorganisms, odors, colors, etc.

Determine filtration accuracy: Determine the required filtration accuracy based on the type and concentration of pollutants. The filtration accuracy is usually measured in micrometers (μ m), and the higher the accuracy, the better the filtration effect, but the service life of the filter element may be shorter.

2、 Choose the appropriate filter type

Coarse filter element: mainly used to filter large impurities such as sand, soil, etc., with a filtration accuracy generally above 50 microns.

Medium filter element: used to filter medium-sized impurities such as rust, sediment, etc., with a filtration accuracy between 10-50 microns.

Fine filter element: used to filter tiny impurities such as bacteria, viruses, etc., with a filtration accuracy between 1-10 microns.

Activated carbon filter: mainly used to remove odors, colors, and organic substances from water, with a filtration accuracy between 0.5-10 microns.

Reverse osmosis filter cartridge: suitable for removing soluble salts, heavy metals, organic substances, etc. from water, with a filtration accuracy of less than 0.0001 microns.

3、 Consider the material and performance of the filter element

Material: The filter element is made of various materials, including paper, synthetic fiber, metal mesh, PP (polypropylene), activated carbon, etc. Different materials have different filtering effects and durability.

Performance: In addition to filtration accuracy, the permeability, efficiency, airtightness, and corrosion resistance of the filter element also need to be considered. For example, precision filters may use high-strength skeletons and fine perforated sponges to improve filtration efficiency and prevent oil and water from being carried away.

When selecting a filter cartridge, multiple factors need to be considered, including filtration requirements, filter cartridge type, material and performance, filter type, flow rate, and service life. By considering these factors comprehensively, the most suitable filter element can be selected to meet the filtration needs.