Innova Liquid Liquid Porometer

Model: DLLP-100 / DLLP-200 / DLLP-500

  • The Liquid Liquid Porometer is a next generation Porometer based on Liquid Liquid displacement method. The Innova DLLP can measure pore size distribution and pore structure analysis of various porous materials with ease.
  • The testing method is Liquid-Liquid displace test function.
  • It is suited for R&D and QC in industries wouldwide such as filtration, nonwovens, pharmaceutical, biotechnology, healthcare, household, food, hygienic products, fuel cell, water purification, and battery. Samples often tested include filter media, membranes paper, powders, ceramics, battery separators and health care products.

According to ASTM F316-03

  • Where a nontoxic wetting liquid can spontaneously fill the pores in the sample and a non reacting Liquid can displace liquid from pores.
  • First the largest pores will get emptied, as they require lower pressure than smaller pores.
  • As the pressure is increased, more and more smaller pores are progressively emptied.
  • The pressure and flow rate of Liquid through the emptied pores provides the through pore distribution. The pressure at which through pores empty is inversely proportional to the pore size.
  • Through pores are the pores connected from one side of material to the other side. Innova Porometer measures the pore throat diameter, which is the most constricted part of the entire pore path.


Application: Non-woven, Electrospinning, Glass fiber, Filter paper, Membrane-MF/UF/NF, Hollow fiber, Hemodialysis, Ceramic, Sintered metal, PTFE, Battery Separator, Fuel cell GDL



Model DLLP-100 DLLP-200 DLLP-500
Test Method Liquid-Liquid replacement
Pressure range 0-100 psi 0-200 psi 0-500 psi
Bubble point 500um-0.06um 500um-0.03um 500um-0.013um
Mean pore size-Minimum pore size 0.2um-0.01um 0.2um-0.005um 0.2um-0.002um
Pressure transducer 0-100 psi 0-200 psi 0-500 psi
Accuracy: 0.1% of reading ; Resolution: 0.000017
Flow control 0-100 cc/min (For Bubble point test)
Liquid flow detects Suit for any Non-corrosive liquid
Liquid flow range 0.00005 to 10 cc/min (other available)
Testing liquid Galwet, Silwet, Porewet, Alcohol, Silicon oil, Water
Sample chamber Stainless steel
Sample size For Flat sheet: diameter 5mm~60mm, thickness ≤30mm
For Hollow fiber / Tubular: diameter 100um~20mm, length ≤50mm
Sample geometry Flat Sheets, Rods, Tubes, Hollow Fibers, Cartridges…
Testing method For Hollow fiber and Tubular sample:
Outside-in and inside-out, the sample is placed directly in the standard sample chamber and no additional external test module is required.
Operation Fully Automated, Touch panel PC for data logging and operating
Power 100-220V, 50/60 Hz
  • Suit for Windows 7/8/10
  • Operation type: with automatic test mode and manual control mode
  • Automatic test has test requirement range setting
  • Test method: For Gas-Liquid testing and Liquid-Liquid testing, Completely Pore size testing, Bubble point (Largest Pore), Permeability
  • Test type: Dry curve / Wet curve and Wet curve / Liner Dry Curve

Standard Accessories:

Main body, Adapter plate, Sealing element, Non-Pore disc, Testing liquid (Galwet/Silwet/Porewet),  Software, Inspection report, Operating manual(ENG).

Optional Accessories:

Hollow fiber testing adapter, EPOXY.


  • Porometry Text and Graph Report of Single data and Multi Data
  • Multi Report: up to 10 data sets simultaneously
  • Reports: Bubble point, Mean flow pore diameter, Cumulative and Differential filter flow%, Flow rate vs Pressure, Fitted pore size distribution vs Diameter, Raw pore size distribution vs Diameter, %Cumulative filter flow vs Diameter, Gas permeability (Darcy, Gurley, Frazier), Pore size distribution and Cumulative FF, Frequency distribution and Cum. FF, …
  • Output: Raw Text, Table Delimited, Excel (Graph Analysis Inclusive)