How to Match a Replacement Filter Cartridge

Match the physical interface first

Photograph the complete cartridge, both ends, label and housing. Measure actual overall length, outside diameter and the connection or sealing arrangement. A “10 inch” or “20 inch” description is a useful family label, not a complete compatibility check.

Compare the filter’s function

A melt-blown polypropylene sediment cartridge, string-wound cartridge, pleated membrane and activated-carbon cartridge perform different tasks. Identify the contaminant or process objective, material compatibility and nominal or absolute rating definition rather than matching only a micron number.

Check conditions and the housing together

Review flow, temperature, pressure, clean and change-out differential-pressure criteria and product-contact requirements against the model documentation. The cartridge, seals and housing must be assessed as an assembly.

• Label, measured dimensions and end-cap photographs
• Water or process liquid and intended filtration task
• Quantity, destination, required documents and replacement restrictions

Use the sample as a controlled reference

If a sample or trial order is appropriate, agree the specification version and what will be checked. Record the accepted model, packaging and inspection criteria so the subsequent batch can be compared with the same reference.