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DVS Vacuum
Gravimetric Vapor Sorption High Vacuum Analyzer

The DVS Vacuum is a high vacuum analyzer designed to measure sorption kinetics and physisorption isotherms of porous materials such as zeolites, MOFs, COFs, carbons, and composites.

Capable of both single and multi-component vapor/gas analysis, the system provides precise control over temperature and pressure while continuously monitoring sample mass, enabling high-resolution sorption measurements under vacuum and near-vacuum conditions.

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The DVS Vacuum uses a combination of roughing and turbomolecular pumps to achieve and maintain high vacuum. Thermal equilibrium is preserved across the entire chamber—including the sample, sensors, and vapor delivery systems, enabling consistent performance across a broad temperature range (10–70 °C) with no condensation risk.

By introducing controlled partial pressures of water or organic solvents without a carrier gas, the system allows true vapor sorption isotherms to be measured with minimal structural interference. It also enables detailed studies of drying kinetics in pharmaceutical powders, making it a versatile tool for advanced material characterization.

Gravimetric Vapor Sorption High Vacuum Analyzer

Discover what makes the DVS Vacuum one of the most unique sorption measurement instruments in the world.

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Long-Term Temperature Stability

Maintaining vapor generation and delivery manifold at the sample temperature, the DVS Vacuum’s innovative design prevents condensation issues common to other instruments on the market, and ensures long-term temperature stability.

Pressure measurements

The DVS Vacuums is the world’s most advanced vacuum DVS device, enabling direct, gas-independent, high-accuracy pressure measurement.

Reliable Precision Mass Measurements

With the unrivaled precision of the Surface Measurement Systems Ultrabalance at its core, the DVS Vacuum has unmatched balance baseline stability over 24 hours, capable of measuring mass changes at a resolution of 0.1ug with peak-to-peak noise of less than or equal to 0.3 ug.

DVS Vacuum Citations


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Measurement Capabilities
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Specifications
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Schematics

Measurement Capabilities

  • In-situ sample outgassing at temperatures of up to 400 °C and high vacuum (≤10-6 Torr)
  • In-situ drying curves of pharmaceutical materials at various pressures and temperatures
  • Real-time adsorption/desorption kinetics
  • Adsorption/desorption IsoTherms (T constant, P variable)
  • Adsorption/desorption IsoBars (T variable, P constant)
  • ‘apparent’ BET (Brunauer, Emmett, and Teller) Surface Area
  • Diffusion coefficients
  • Heat of Adsorption
  • Dynamic Competitive Adsorption of two probe molecules (e.g. CO2 – H2O, Toluene – H2O, MeOH – H2O)
  • Binary competitive adsorption of one probe molecule at constant loading of another probe molecule
  • Multiple adsorption/desorption and sample regeneration cycles

Specifications

Temperature

  • Temperature controlled enclosure
  • Control range: 10°C to 70°C
  • Control precision: ±0.1°C
  • The enclosure also provides anti-condensation protection

Weight measurement            

  • High-Resolution microbalance
  • Sample mass: between 1 and 1000mg
  • Mass change: ±150mg
  • Resolution (precision): 0.1 μg
  • Peak to peak noise: ≤ 0.3 μg

Pressure measurement

  • 1000 Torr Baratron full scale from 0.01 up to 1000 Torr (standard)
  • 10 Torr Baratron: full scale from 0.005 up to 10 Torr (standard)
  • Other ranges available upon request (100 and 500 Torr)
  • Accuracy: ±0.5 of Reading
  • Resolution: 0.01% of full scale

Vacuum pressure measurement

Vacuum pressure transducer: full scale from 1×10-8 Torr up to 760 Torr

Computer hardware and software

The system is fully automated and controlled by purpose-built software. Data can be analyzed in real-time using analysis software.

Schematics

DVS Vacuum

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Find out more about the DVS Vacuum

To find out more details about the world’s most advanced DVS vacuum instrument, or enquire how you can bring its incredible capabilities to your lab, simply fill in your details below.

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