3P meso series


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3P meso series

The 3P meso series of instruments offers fully automated volumetric sorption analysis with Nitrogen and other non-corrosive gases (e.g., CO2, Ar, Kr, H2, O2, CO, NH3 or CH4) on one, two or four analysis stations, respectively. It allows the characterization of mesoporous materials at a minimum of space requirements.

The 3P meso 112 is capable of measuring one sample while at the same time carrying out an in-situ degassing of a second sample. At the end of both the analysis and the degassing process, the heating mantle is switched with the dewar and the analysis continues on the second sample. Alternatively, both stations can be used for sample activation.

A two-station analysis setup with integrated sample preparation is also available with the model 3P meso 222. This system allows simultaneous analysis of two samples.

The 3P meso 400 is a compact sorption analyzer with four completely independent analysis stations for the determination of BET surface area, total pore volume and pore size distributions of meso- and macroporous materials. Each analysis station can be programmed individually and started at any given time. This is achieved by four independent dosing volumes and without any time loss.


  • One (3P meso 112), two (3P meso 222) or four (3P meso 400) independent analysis stations
  • Integrated in-situ sample degassing and independent manifold volumes with individual pressure sensors
  • Besides Nitrogen, other adsorbates are possible such as CO2, Ar, Kr, H2, O2, CO, NH3 or CH4
  • Software-assisted presentation of isotherms and kinetic data (equilibrium pressure vs. Time)
  • Static-volumetric analysis setup
  • State-of-the-art internal pressure regulation
  • Single-/Multipoint-BET-surface area determination (DIN 66131, ISO 9277)
  • Langmuir surface area
  • Adsorption and desorption isotherms
  • Total pore volume and average pore radius
  • NLDFT (density functional theory)
  • Mesopore size distribution according to BJH (DIN 66134) and DH method
  • Micropore analysis (DIN 66135) according to t-plot, Dubinin-Radushkevich, Horvath-Kawazoe and Saito-Foley method

Literature and Norms

/1/ Single-/Multipoint BET surface area (DIN 66131, ISO 9277)
/2/ Mesopore size distribution according to BJH (DIN 66134)
/3/ STSA-surface area of carbon blacks according to ASTM D6556
/4/ Micropore analysis (DIN 66135) according to t-plot or Dubinin-Radushkevich
/5/ PARTICLE WORLD 19; p. 34 – 35; “3P INSTRUMENTS as specialist in the field of adsorption”


  • external degassing unit for 4 stations
  • sample preparation in vacuum
  • max. degasser temperature: 400 °C
  • Temperature range 82 – 323 K
  • Temperature stability ± 0.004 K (standard deviation)
  • Easy-to-use software for data acquisition, display, analysis and archiving

Tempering Kit

Tempering Kit for all sorption instruments, 0-50°C
  • For all sorption instruments, 0-50°C

Other Gas Adsorption Analyzers:

3P micro seriesUp to 3 stations, especially suitable for micropore analysis
3P sync seriesUp to 4 stations in one dewar, mesopore analysis with minimal space consumption
3P surface DX4 stations, suitable for surface determination

Service hotline (Germany)
+49 8134 9324 0

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