Quantachrome

  • SURFACE AREA AND PORE SIZER ANALYZERS

    SURFACE AREA AND PORE SIZER ANALYZERS

    As particle size decreases, so does the surface are per unit volume (or mass). Furthermore, the generation of porosity, especially when due to small pores, can produce surface area far in excess of that produced by particle size reduction! Surface area measurement is probably the most widely used means to characterize porous materials.


  • POROZIMETERS

    POROZIMETERS

    The "size" of pores is described both by "diameter" and volume. Measurable pore diameters can vary from molecular dimensions (a few angstroms) to almost a millimeter. It is not surprising, therefore, that the technology required to measure the smallest pores is significantly different from that used for the largest!


  • PYCNOMETERS

    PYCNOMETERS

    One intrinsic property of a solid is density. i.e. mass per unit volume. But the volume-filling characteristic, hence the method to measure it, depends on whether the solid is undivided or pulverized


  • CHEMISORPTION ANALYZERS

    CHEMISORPTION ANALYZERS

    Certain materials are useful because of their involvement in chemical reactions. We can make use of that behavior for characterization purposes by probing the surface with reactive gases.


  • VAPOR SORPTION ANALYZERS

    VAPOR SORPTION ANALYZERS

    Most materials come into contact with water, even if its only through its air-borne vapor. For many of those materials the consequences may not be desirable, or as expected, so it makes sense to study this very specific reaction as part of a total characterization.


  • RIFFLERS

    RIFFLERS

    All analytical techniques produce results that truly only describe the small aliquot subjected to the specific test or measurement. How representative that is of the much larger, bulk material, one can only guess unless one is assured the material is 100% homogeneous.