Pore Size and Distribution Products

Capillary Flow Porometer

Capillary Flow Porometer

Available Tests:
  • Bubble Point (largest pore)
  • Mean Pore Size
  • Pore Size Distribution
  • Integrity
  • Gas, Liquid, Gurley, and Frazier permeability
  • Hydro-Head test
  • External Surface Area
Operating Conditions:
  • Compression/Cyclic Compression
  • Tension
  • Elevated Temperature
  • Test gas - Air or Noncorrosive gas
  • Test liquid - A variety of chemicals usable
Features:
  • Nondestructive
  • Automated Control
  • No toxic material or subzero temperature used
  • Minimal effect on pore structure due to the use of low pressures

PMI's Capillary Flow Porometer is versatile - it allows the user to test samples under compression, tension, elevated temperature, or an appropriate chemical environment, thereby simulating operating conditions. Industries worldwide, ranging from the filtration to nonwovens to battery industries, utilize the PMI Capillary Flow Porometer for R&D and quality control. Samples tested include filter media, membranes, paper, and battery separators.

This instrument can also be customized for different testing options listed below:

Microflow Porometer, In-Plane Porometer, Clamp-On Porometer, and Quality Control Porometer.
The PMI Microflow Porometer is a Capillary Flow Porometer but with the ability to measure permeability in nearly impermeable materials. This instrument is user-friendly and nondestructive. The Microflow Porometer is an asset to quality control and R&D environments. The PMI Microflow Porometer is typically used to characterize membranes with very low permeability (gas separation membranes). Packaging, rubber and specialty gas manufacturing companies will find this instrument beneficial.
The PMI In-Plane Porometer - a Capillary Flow Porometer - has a sample chamber that allows gas to displace liquid in pores to move radially from the center to the periphery of a sheet shaped sample. Suitable sample configurations give in-plane pore structures of multi-layered materials.
The PMI Clamp-On Porometer is a porometer with a sample chamber that permits the test material to be clamped between two test heads on any desired location. There is no need for a sample to be cut from the bulk material. The bulk material can slide through the test head. Many tests can be performed rapidly on many locations on the bulk material without damaging the bulk material in any way.
The PMI Quality Control Porometer is a Capillary Flow Porometer that has fixed test parameters so tests can be performed without worrying about appropriate test parameters. Operator involvement is minimal and the tests are rapid. The instrument is suitable for quality control applications.

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Compression Porometer

Compression Porometer

Available Tests:

  • Mean Pore Size
  • Pore Size Distribution
  • Bubble Point (largest pore)
  • Gas, Liquid, Gurley, and Frazier permeability
  • External Surface Area

Operating Conditions:

  • Compression/Cyclic Compression
  • Test gas - Air or Noncorrosive gas

Features:

  • Nondestructive
  • Automated Control

The Automated Compression Porometer is designed to characterize the pore structure of a material under compression. Industries world-wide, ranging from the filtration to the nonwovens and battery use, the PMI Compression Porometer for R&D and quality control. Samples often tested include filter media, membranes, paper and battery separators. The instrument permits tests to be carried out under simulated true service conditions.

This instrument can also be customized for different testing options listed here: Cyclic Compression Porometer.

The PMI Cyclic Compression Porometer applies cyclic stresses on a sample and measures the pore structure characteristics after a desired number of cycles. The stress cycle and porosity testing are continued. Many products like filtration media, battery and fuel cell components and felts used for dewatering paper are subjected to cyclic stresses. Such products need to be characterized under appropriate compressive stress cycles. The PMI Cyclic Compression Porometer tests samples under simulated true service conditions and measures the largest pore diameter, mean flow pore diameter, and pore size distribution. These data represent realistic characteristics of pore structure and porosity.

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Bubble Point Tester

Bubble Point Tester

Available Tests:

  • Bubble Point (largest pore)

Operating Conditions:

  • Compression/Cyclic Compression
  • Tension
  • Elevated Temperature
  • Test gas - Air or Noncorrosive gas

Features:

  • Nondestructive
  • Automated Control

User-friendly and fully-automated, the Bubble Point Tester produces reproducible and precise results. Industries worldwide, ranging from the automotive to the filtration to the paper industries, utilize the PMI Bubble Point Tester for R&D and quality control. Samples tested include airbag materials, filter media, and felts.

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Complete Filter Cartidge Analyzer

Complete Filter Cartridge Analyzer

Available Tests:

  • Mean Pore Size
  • Pore Size Distribution
  • Bubble Point (largest pore)
  • Integrity
  • Gas, Liquid, Gurley, and Frazier permeability
  • Hydro-Head test

Operating Conditions:

  • Elevated Temperature

Features:

  • Nondestructive
  • Automated Control
  • Adjusts cartridge of any size

The PMI Complete Filter Cartridge Tester provides fully automated through-pore analysis of entire filter cartridges of various geometries. PMI's Complete Filter Cartridge Tester is perfect for quality control and R&D environments. It is fast, accurate, and nondestructive. The Complete Filter Cartridge Tester has applications in any industry that utilizes filter cartridges. Specific examples include the automotive, filtration, nonwovens, and pharmaceutical industries.

This instrument can also be customized for different porosity testing options listed here: Filtration Media Analyzer.

The PMI Filtration Media Analyzer is designed to meet the needs of the filtration industry -- both in the R&D and quality control environments. The Filtration Media Analyzer characterizes a wide range of filter media, including microfiltration and ultrafiltration membranes.

Testing under compression, tension, and elevated temperature is also possible, thereby allowing the user to simulate actual operating conditions.

Also see our newest product, the Automated Filter Cartridge Tester.

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Liquid Extrusion Porosimeter

Liquid Extrusion Porosimeter

Available Tests:

  • Total Pore Volume
  • Mean Pore Size
  • Pore Size Distribution
  • Liquid Permeability
  • Porosimetry Surface Area

Operating Conditions:

  • Compression/Cyclic Compression
  • Tension
  • Elevated Temperature
  • Test gas - Air or Noncorrosive gas
  • Test liquid - A variety of chemicals usable

Features:

  • Nondestructive
  • Automated Control
  • No toxic substance used in tests

The Liquid Extrusion Porosimeter is employed for the characterization of porous materials used in many industries, such as biotech, pharmaceutical, filtration, food and environmental, without fear of harmful effects on employees or the environment from porosity testing.

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Mercury/Nonmercury Intrusion Porosimeter

Mercury/NonMercury Intrusion Porosimeter

Available Tests:

  • Total Pore Volume
  • Mean Pore Size
  • Pore Size Distribution
  • Particle Size Distribution
  • Porosimetry Surface Area
  • Bulk Density
  • Absolute Density

Operating Conditions:

  • Normally high pressures
  • Test liquid - Mercury

Features:

  • Automated Control

The PMI Mercury/Nonmercury Intrusion Porosimeter is an excellent R&D tool. Used in various industries ranging from automotive and pharmaceutical to paper, the Mercury/Nonmercury Intrusion Porosimeter has tested samples such as brake pads, catalytic converter materials, coated papers, and powder precursors. With unlimited user-defined data-points, automated data collection and reduction, and the least mercury exposure of any porosimeter on the market, PMI's Mercury/Nonmercury Intrusion Porosimeter is safe, reliable, and precise.

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BET Sorptometer

BET Sorptometer

The BET Sorptometer uses Liquid Nitrogen for its tests

Available Tests:

  • Total Pore Volume
  • Mean Pore Size
  • Pore Size Distribution
  • Single- and Multi-point Surface Area
  • Adsorption and Desorption Isotherms
  • Chemisorption

Operating Conditions:

  • Normally subzero temperatures
  • Test substance - Any pure gas

Features:

  • Automated Control
  • A variety of chemicals for chemisorption

PMI's BET Sorptometer has a multitude of applications in industries worldwide. Industries that utilize the versatile BET Sorptometer include the automotive, battery, and pharmaceutical. Specific applications include the characterization of catalysts in the chemical industry, pulp characterization in the paper industry, and porosity testing of the powder pre-cursors to predict adhesion and final porosity in the powder metallurgy industry.

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Liquisorb Sorptometer

Liquisorb Sorptometer

The Liquisorb Sorptometer uses water for its tests

Available Tests:

  • Total Pore Volume
  • Mean Pore Size
  • Pore Size Distribution
  • Single- and Multi-point Surface Area
  • Adsorption and Desorption Isotherms
  • Chemisorption
  • Liquid Vapor Adsorption

Operating Conditions:

  • Test substance - Water, hydrocarbon solvents

Features:

  • Automated Control

A recent extension of the classic BET technique now allows for the automated, volumetric characterization of adsorption of the vapor of a liquid as a function of increasing or decreasing partial pressures of the liquid vapor. Liquids used include water and other organic liquids such as benzene, hexane, and acetone. Specific applications for the Liquisorb Sorptometer include evaluating how quickly building materials will deteriorate based on their adsorption properties, properties of nonwovens such as moisture vapor transmission and adsorption, and properties of ceramics, including repulsion and adsorption.

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