Porosimetry by Gas Adsorption Mesopore and Macropore Size, Volume & Area Measurement The   porous   nature   of   materials   affects   many   applications,   such   as adsorption      capacity      and      efficiency,      reactivity,      electrochemical performance,     catalyst     efficiency     and     dissolution     characteristics. Characterising   and   understanding   pore   volume,   pore   area   and   pore size     is,     therefore,     critical     to     many     industries,     applications     and materials,    such    as    catalysis,    pharmaceuticals,    power    storage    and generation, additive manufacturing and constructions. Micropores,    mesopores    and    small    macropores    are    conveniently studied   by   gas   adsorption   and   MCA   Services   have   a   comprehensive range     of     options,     including     various     adsorptive     gases     for     the generation   of   pore   size,   volume   and   area   data.   Powerful   state-of-the- art    instrumentation    combined    with    our    decades    of    experience, means   that   we   are   can   recommend   and   tailor   analyses   to   suit   your materials   and   their   use   as   well   as   provide   input   to   data   interpretation so   that   you   gain   the   most   information.   This   page   refers   to   mesopore and    macropore    analysis    using    our    Micromeritics    TriStar    II    Plus instrument.     For     dedicated     micropore     analysis     and     combined micropore   /   mesopore   analysis   please   see   our   Micropore   Analysis page . Key Information: • Pore volume, pore area and pore size distributions • Flexible analytical options tailored to specific samples • Full gas adsorption & desorption isotherms • Pores in the range 2nm to 300+ nm analysed by nitrogen adsorption • BET Surface Area included in analyses • Standard reporting format with tabulated and graphical data • Flexible reporting options can be extended to specialised formats as required • Nitrogen and argon adsorption available • t-plot and alpha-S plot methods available • Comprehensive options for data reduction and presentation • Flexible and comprehensive degassing options Gas   adsorption   is   a   full   porosimetry   testing   method   for   pore   size distribution,   pore   area   and   pore   volume   data.   These   are   reported   as standard    together    with    the    multipoint    BET    surface    area    of    the sample.   Typically   pore   sizes   in   the   range   2   nm   to   350   nm   diameter are    measured    by    this    technique,    although    this    range    may    be extended     depending     on     the     nature     of     the     sample.     Nitrogen adsorption     is,     therefore,     ideal     for     the     full     characterisation     of mesoporous   materials   and   can   be   tailored   to   additionally   provide   a good   understanding   of   the   presence   and   extent   of   microporosity   as   a rapid   and   cost   effective   screening   technique   in   a   single   analysis.   More extensive   characterisation   of   microporosity   is   provided   through   our micropore analysis options. Gas    adsorption    isotherms    can    also        be    combined    with    mercury porosimetry    to    investigate    the    complete    range    of    micro    pores through to macro pores.   For   the   generation   of   accurate   pore   size   distribution,   pore   volume and   pore   area   data   it   is   imperative   that   samples   are   degassed   prior   to analysis.   MCA   Services   can   accommodate   a   wide   range   of   conditions for   this   which   may   be   combined   to   suit   the   individual   requirements   of our   clients.   Degassing   temperatures   up   to   200˚C   under   vacuum   or 400˚C   with   flowing   nitrogen   or   helium   gas   can   be   applied.   This   is usually   conducted   at   MCA   Services   immediately   prior   to   analysis   as part of our standa rd procedure.