How to measure hollow fiber membranes with POROLUX™

Get accurate, stable results — see the full workflow in action

Hollow fiber membranes can be challenging to measure because their structure, geometry, and fragility require precise handling.

This video shows how to prepare, position, and test hollow fiber samples using the POROLUX™ porometer, with small details that make a big difference in measurement stability.

Whether you're working in R&D, quality control, or evaluating new characterization methods, this clear demonstration helps you understand how to get reliable pore size data from even the most delicate hollow fibers. 

What you can take away from this video

• Learn how to trim and handle fragile fibers without cracking or flattening them.

• See how to apply wetting liquid in a way that avoids over‑wetting.

• Understand how fiber geometry affects sealing and alignment.

• Discover the best practices to prevent leaks and measurement drift.

• Get a realistic view of how POROLUX™ fits into membrane research and QC.

This video is ideal for ultrafiltration, microfiltration, hemodialysis fibers, gas separation membranes, and any application where precision pore size characterization really matters.

Fast overview of the workflow

Step 1: Prepare your hollow fiber sample
A clean, properly cut fiber ensures smooth wetting and stable sealing.

Step 2: Wet the fiber with the test liquid
The correct amount of wetting liquid is essential for accurate FBP and MPD values.

Step 3: Mount the fiber in the hollow‑fiber holder
The video demonstrates how to position the fiber correctly, ensure alignment, and achieve a tight seal.

Step 4: Start the measurement in the POROLUX™ software
Choose your method, verify your parameters, and begin the measurement.

Step 5: Evaluate your results
FBP, MPD, and the pore size distribution provide key insights into membrane integrity and performance. 

Why pore size testing of hollow fiber membranes matters

Hollow fiber membranes are used in applications where precision is crucial — from filtration and separation to medical treatments. Pore size directly affects flow rate, selectivity, permeability, and overall membrane performance.

POROLUX™ porometers help you verify membrane quality, compare production batches, and ensure that your fibers meet the technical specifications required for your industry.

Porometry is fast, clean, and non‑destructive, making it ideal for routine QC as well as advanced development work.