Sample Testing Services

Sample testing

Before you set out to buy an instrument for characterisation of any material, the first question you should ask is what will be the most appropriate method to obtain the information needed. As well as developing and manufacturing a range of high-quality analytical equipment, including porometers, permeameters and porosimeters, PMI can advise on what techniques to use – and can even do the analysis for you.

PMI’s Analytical Services team is equipped with expert knowledge and has access to a wide variety of instruments and techniques. Its specialists are able to discuss your specific analytical needs, find out exactly what kind of information you need to determine and then tell you which test – or combination of tests – will give you the best results.

In addition, PMI’s application engineers are available to follow up their detailed report with help in interpreting the results you are obtaining.

If you have a sample that needs testing, you can send it to PMI for analysis. The procedure is very simple and within a couple of working days the engineers can return the data you need.

When it comes to pore size and other characteristics of porous materials, there is no company better placed to advise than PMI. Here is a list of techniques for which PMI makes instruments and offers testing services:

  • Capillary flow porometry for pore distribution, mean flow diameter, bubble point and hydrohead (microflow porometry also available)
  • Liquid extrusion porosimetry for liquid permeability and through-pore volume
  • Permeability, including Frazier, Gurley, Rayl, Darcy and gas/liquid/diffusion permeametry
  • Water vapour transmission rate as a function of humidity, temperature and pressure
  • Mercury and non-mercury intrusion porosimetry for pore volume, diameter and surface area, along with intrusion and extrusion methods, for use with hydrophobic or hydrophilic pores
  • Gas adsorption for surface area, pore volume, T curve, micropore analysis, adsorption and desorption isotherms, chemisorption of strong chemicals and vapour adsorption
  • Pycnometry for bulk and true density
  • Effects of simulated service conditions, including compressive stress, stress cycles, temperature and strong chemicals