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The World’s Most Advanced DVS Instrument

New! DVS Resolution

Dual Vapor Gravimetric Sorption Analyzer

DVS Resolution’s key feature is the combined ability to precisely control and measure temperature and relative humidity while recording the highest resolution changes in mass. DVS Resolution uses a dry carrier gas typically nitrogen or compressed air for its operation. Digital mass flow controllers regulate flows of dry and saturated gases.

Relative humidity is generated by precisely mixing dry and saturated gas flows in desired flow ratios which produce expected relative humidity. In a typical experiment a known concentration of water vapor is delivered over a sample placed inside the sample pan connected to the Surface Measurement Systems Ultrabalance™ measuring realtime mass changes caused by sorption or desorption of water molecules. Prior to sorption measurements, the sample can be in-situ preheated/dried at temperatures of up to 300oC.

Additionally, the sample chamber and water vapor generation are at thermal equilibrium in a single temperature enclosure allowing for operation over the entire temperature range (5-85 oC) without risk of condensation.

 

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DVS Resolution

Outstanding performance

Long Term Temperature Stability

  • Vapor generation and delivery at sample temperature
  • Typical stability at 25 oC is ±0.02 oC
  • Prevents condensation issues found in instruments with multiple temperature zones
  • Allows for accurate and stable humidity delivery

Humidity Performance

  • ±0.1% RH of target humidity
  • Highest level of humidity precision in any instrument we’ve ever produced

Balance Baseline Stability over 24 hours

  • Mass changes at a resolution of 0.1 μg
  • Root mean square noise of ≤ 0.3 μg

True0™ RH

  • Only DVS instrument offering True0™ RH
  • Achieve partial pressures of water as low as 0.0% RH
  • Study of hydrates and other compounds only completely dry below 1% RH
  • Allows investigation of sorption/desorption at low RH levels
Key measuring capabilities:
  • Water, organic solvent, and gas sorption and desorption isotherms
  • Co-adsorption isotherms using two vapors
  • Optional in-situ sample preheating/drying to 300 oC
  • Multiple sorption/desorption and sample drying or activation cycles
  • Sample masses from 1 mg to 5000 mg
  • Surface and bulk measurement capabilities and analyses
Key hardware benefits:
  • Only system to measure organic vapor partial pressure directly using Ultrasonic Sensor (patent pending)
  • Open stainless steel stand design enabling easy access to sample pan while minimizing static electric charging
  • Broad range (5-85 oC) and single uniform and accurate temperature enclosure
  • Next generation control and evaluation software for the most advanced experimental design and data analysis
  • Capable of upgrading to 5 balances
  • Optional IR, Raman and Video imaging with integrated control software
Raman Spectroscopy

  • Fully integrated hardware/software solution for triggering and capturing Raman spectra during sorption experiments
  • Allows for a more complete understanding of vapor-solid interactions for materials

Optional Microscopy and Video

  • Optional 5 megapixel color camera
  • 200x optical zoom
  • Images have time-date-temperature humidity stamps
  • Grid overlay and calibration for measuring dimensional change

High Temperature Preheater for Drying, Curing and Vapor Generation at Elevated Temperatures

  • In-situ degassing/activation of samples up to 300 oC
  • The temperature is measured by Pt100 directly below sample pan
  • Humidity generation up to 150 oC
Temperature
High temperature pre-heater for sample drying/activation
Resolution Stand
Solvent Reservoirs
Relative humidity generation and measurement
Relative Humidity Sensors
Ultrasonic Sensor
Solvents Available include:
System Software
Analysis
Control
Mass measurement
Software Options
DVS Resolution Schematic
dvs_resolution_schematic

Download DVS Resolution brochure >>For questions, please email [email protected]

For more information, contact us here.

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