Innova Ultra-Nano Porometer

Series: Innova UNP-1100 / Innova UNP-1200/ Innova UNP-1500

  • Innova Ultra-Nano Porometer (Innova-UNP) is a combination of Capillary Flow Porometer(gas-liquid method) that measure large pores of 500 um to 0.013 um and has liquid-liquid Porometer function to accurately measure much smaller pores.
  • The Innova-UNP is the only commercially available pore size measurement system which can accurately measure pores from macro, micro, ultra and nano range.
  • Capillary Flow Porometer and Liquid Liquid Porometer in a single machine
  • Measures Through Pores from 2 nm to 500 um
  • Mean Pore Size, Bubble Point (Largest Pore), Pore Distribution
  • Cumulative Filter Flow % and Liquid Permeability
  • Available in 3 variants 100 PSI, 200 PSI and 500 PSI

According to ASTM F316-03

  • Where a nontoxic wetting liquid can spontaneously fill the pores in the sample and a non reacting Gas (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 Gas (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

Series Innova UNP-1100 Innova UNP-1200 Innova UNP-1500
Testing Method Gas-Liquid expulsion and Liquid-Liquid expulsion
Pressure Range 100 psi 200 psi 500 psi
Maximum Pore 500 um 500 um 500 um
Minimum Pore 10 nm 5 nm 2 nm
Sample Size Dia. ≤ 60mm and Thickness upto 30mm
Testing Liquid Galwet, Silwet, Porewet, IPA, Water, IBA… any non-corrosive liquid can be used.
Extended Pore Size Range (Option) 800 um (ER Option)
Pressure Range Accuracy ±0.1% of full scale
Low Flow Rate 50 sccm 50 sccm 100 sccm
High Flow Rate 200 SLM 200 SLM 200 SLM
Extended Flow Range 10 SLM 10 SLM 10 SLM
Flow Meter Accuracy 1% of Reading
Flow Resolution 1 in 60,000
Sample chamber Stainless steel, Two chamber design

Size:Φ99mm X 60mm (Depends on actual test requirements)

Data transfer External PC or Build-in Touch panel PC
Operation Automatic test mode and manual operate mode
Test Type Gas-Liquid replacement method and Liquid-Liquid replacement method

Pore size distribution

Bubble point


Pressurized gas Clean and dry gas, such as air and nitrogen gas.

Air Compressor or Gas cylinders

Environmental Ambient Temperature: 20℃ to 35℃

Humidity: 35% to 55%

Power AC 100V-240V, 10A, 50/60Hz

Standard Accessories:

Main body, Sample Adapter plate, Sealing element, Testing liquid (Galwet/Silwet/Porewet),  Software, Inspection report, Operating manual.

Optional Accessories:

Hollow fiber testing adapter, EPOXY.

  • Bubble point, Mean flow pore diameter, Smallest Pore Diameter
  • Flow rate vs Pressure (Wet curve, Dry curve and Half dry curve)
  • Cumulative and Differential Filter Flow%
  • Pore size distribution vs Diameter
  • Pore size distribution and Cumulative FF
  • % Cumulative filter flow vs Diameter
  • Gas permeability, Darcy’s Law
  • Frequency distribution and Cum. FF
  • Output: Raw Test, Excel, PDF





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This will allow us to identify the most suitable instrument for your requirements.