Expertise in the Physical Characterisation of Materials
01763 262333
MCA Services Unit 1A Long Barn, North End, Meldreth, Cambridgeshire SG8 6NT UK
01763 262333
© MCA Services
Pore size ranges
Porosimetry concerns the analysis of materials for their pore size, pore volume and pore area distributions and pore sizes are usually quoted in terms of micropore, mesopore and macropore ranges.  Measurement of pores throughout these ranges can not be undertaken by a single technique. Either a single technique must be selected for a given sample or a combination of techniques applied.  The most common techniques for porosimetry analysis are Mercury Porosimetry (covering the mesopore and macropore ranges) and Gas Adsorption (for the micro pore and mesopore range). Dedicated micropore analysis is provided for the smallest pore sizes and we offer a range of adsorptive gases to meet with the most specialised of analyses. MCA Services offers both mercury porosimetry and gas adsorption / isotherm techniques for the determination of the pore size, pore area and pore volume distributions and the measurement of sample porosity. Information on these techniques and our analytical services are given on their respective pages through the menu above.  The choice of  technique is dependent on the expected pore sizes within the sample. For the analysis of  microporous and microporous materials,  gas adsorption (adsorption isotherms)  is recommended. The pore size range covered by this technique is typically up to 300 nm but can be extended depending on the nature of the sample. Pore size, pore area and pore volume data is reported together with BET surface area.  A choice of adsorptive gases is available, including nitrogen, argon, carbon dioxide and hydrogen. For materials having larger pore sizes, mercury intrusion porosimetry is recommended which covers the approximate range 0.003 μm to  600 μm (mesoporous to macroporous materials) and provides pore size, pore area and pore volume data. This can be extended to the measurement of bulk density, skeletal density and volume porosity. An alternative method for the determination of the total pore volume of a sample is by the combination of mercury pycnometry (bulk density measurement) and helium pycnometry (absolute density measurement). A description of these techniques is provided on our density analysis page.   For further information on each technique and the data provided as part of our standard report packages please refer to the pages for each option. Alternatively the staff at MCA Services will be happy to discuss and advise on suitable techniques for analysis.
Expertise in the Physical Characterisation of Materials
MCA Services Unit 1A Long Barn, North End, Meldreth, Cambridgeshire SG8 6NT UK
01763 262333
© MCA Services
Pore size ranges
Porosimetry concerns the analysis of materials for their pore size, pore volume and pore area distributions and pore sizes are usually quoted in terms of micropore, mesopore and macropore ranges.  Measurement of pores throughout these ranges can not be undertaken by a single technique. Either a single technique must be selected for a given sample or a combination of techniques applied.  The most common techniques for porosimetry analysis are Mercury Porosimetry (covering the mesopore and macropore ranges) and Gas Adsorption (for the micro pore and mesopore range). Dedicated micropore analysis is provided for the smallest pore sizes and we offer a range of adsorptive gases to meet with the most specialised of analyses. MCA Services offers both mercury porosimetry and gas adsorption / isotherm techniques for the determination of the pore size, pore area and pore volume distributions and the measurement of sample porosity. Information on these techniques and our analytical services are given on their respective pages through the menu above.  The choice of  technique is dependent on the expected pore sizes within the sample. For the analysis of  microporous and microporous materials,  gas adsorption (adsorption isotherms)  is recommended. The pore size range covered by this technique is typically up to 300 nm but can be extended depending on the nature of the sample. Pore size, pore area and pore volume data is reported together with BET surface area.  A choice of adsorptive gases is available, including nitrogen, argon, carbon dioxide and hydrogen. For materials having larger pore sizes, mercury intrusion porosimetry is recommended which covers the approximate range 0.003 μm to  600 μm (mesoporous to macroporous materials) and provides pore size, pore area and pore volume data. This can be extended to the measurement of bulk density, skeletal density and volume porosity. An alternative method for the determination of the total pore volume of a sample is by the combination of mercury pycnometry (bulk density measurement) and helium pycnometry (absolute density measurement). A description of these techniques is provided on our density analysis page.   For further information on each technique and the data provided as part of our standard report packages please refer to the pages for each option. Alternatively the staff at MCA Services will be happy to discuss and advise on suitable techniques for analysis.
01763262333