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Nitrogen Porosimeter [N2 Porosimeter]

The NOVA e-Series of surface area analyzers offers a full line of rapid, high throughput B.E.T. surface area and pore size analyzers. Eight fully automatic models meet the needs of any research or quality assurance laboratory.


Contact person:

Kokkoni Karakosta
tel. (+30) 2510462247
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n2 porosimeter


BET Surface Area Analyzers

All NOVA models can produce BET surface area results using the classical helium void volume method, or via the patented helium-free method.

Pore Size Analyzers

Every NOVA is also a pore size analyzer capable of measuring both adsorption and desorption isotherms in a few hours, completely unattended.


Superior engineering delivers years of trouble-free surface area analysis and pore size measurement. All process control features are self-contained, enabling the instrument to function independently without operator intervention or external computer support.


Critical Components

  • High sensitivity pressure transducer
  • High resolution 16-bit A/D converter
  • Robust dewar elevator
  • Filter gaskets to prevent vacuum system contamination by powdered samples
  • Reliable solenoid valves and leak-free (10-9 cc/sec) dosing manifold
  • Precision coolant level control


Sample Preparation

Each NOVA offers up to four built-in, microprocessor-controlled degassing stations with independent flow rate selection for each station. Sample preparation may be performed under vacuum or flow conditions with temperature selection from ambient to 450°C.



  • Single- and multi-point B.E.T. surface area with Y-intercept, "C" constant, slope and correlation coefficient.
  • Adsorption and desorption isotherms.
  • B.J.H. pore size distribution calculated from the adsorption or desorption isotherm.
  • Total pore volume.
  • Sample density.

Results with NOVAWin 2 software


User-selectable number of data points at any desired target pressures

BET Surface Area:

Single point, multi-point, slope, intercept, "C" constant, correlation coefficient, tabular and graphic format

Langmuir Surface Area:

Multi-point, slope, intercept, correlation coefficient, tabular and graphic format

BJH Pore Size Distribution:

Volume, area, adsorption, desorption, cumulative, derivative (linear and logarithmic), interpolated, tabular and graphic format

Dollimore-Heal Pore Size Distribution

Volume, area, adsorption, desorption, cumulative, derivative Distribution (linear and logarithmic), tabular and graphic format


Micro Pore Area:

Slope, intercept, correlation coefficient, average pore size, micropore volume, average adsorption energy, tabular and graphic format

Total Pore Volume:

At user-selectable P/P0

Average Pore Size:

Radius, diameter

Statistical Thickness:

de Boer, Halsey or Carbon Black models


Micropore area, mesopore area, micropore volume, correlation coefficient, tabular and graphic format

Non-local Density Functional Theory methods (NLDFT)-

Large library of "kernels" for nitrogen, argon and carbon dioxide adsorbates, in different pore geometries such as cylinders, slits and spheres, at different temperatues from 77K to 273K.

Other Pore Size Models:

MP, Horvath-Kawazoe (HK), Dubinia-Astakhov (DA), Saito-Foley (SF), tabular and graphic format.

GCMC Method:

CO2 - carbon at 273K based on a slit-pore model

Fractal Dimensions:

Neimark-Kiselev (NK), Frenkel-Halsey-Hill (FHH)