DVS Endeavour

DVS Endeavour

5X Parallel Gravimetric Sorption Analyzer

A key feature of DVS Endeavour is the ability to precisely control and measure temperature and relative humidity while simultaneously recording the highest resolution changes in mass on up to 5 samples. Additionally Organic vapor partial pressures can now be directly measured using Surface Measurement Systems’ Speed of Sound sensor (patent pending). In a typical experiment a known concentration of water vapor or organic vapor is delivered over a sample placed inside the sample pan. The sample pan is connected to the Surface Measurement Systems Ultrabalance™ measuring real-time mass changes caused by sorption or desorption of water and/or organic molecules.


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Outstanding capabilities

  • Simultaneous 5X sample measurement
  • Organic and Water vapor sorption kinetics
  • Organic vapor sorption in a fixed RH background
  • Real time partial pressure measurement and control
  • Water and organic vapor sorption isotherms from 10 to 70 °C
  • In-situ drying of samples to 200 °C
  • Optional Color Video Microscopy
  • True0™ drying at 0.0% RH
Temperature controlled enclosure
Control range: 10°C to 70oC
Regulation accuracy: ± 0.02oC
Enclosure provides anti-condensation protection.
Delivers local sample temperatures of up to 200 °C
Heating ramp rates: up to 10 °C / min
Sensors: Pt-100 thermocouple
Manifold: 316 stainless steel
Seals: Viton
Tubing: 1/4 inch stainless steel
Material: glass
0.5 and 1L as standard
High accurate digital mass flow controllers and capacitance probe
High accuracy digital mass flow controllers for vapor and gas delivery 

Capacitance probe

Carrier Gas – Dry air or Nitrogen
Relative humidity range from 0 to 98%
RH range accuracy from 5 – 60 °C ±1%
RH range accuracy from 60 – 85 °C ±2%

Carrier Gas – Dry air or Nitrogen
Partial Pressure range from 0 to 90%
Partial Pressure accuracy from 10 – 70 °C ±1%
Next generation purpose built control and evaluation software for the most advanced experimental design and data analysis.

DVS Control

Complex protocols for multiple experimental sequences using sample pre-heating and conditioning; isotherm, isobar and ramped humidity and organic vapor methods; single or dual vapor delivery and control; fixed time or mass derivative steps.

Multiple-method protocols incorporating:
• Sample pre-heating
• Vapor sorption
• Vapor exchange
• Dual vapor co-adsorption
• Temperature changes in a single experiment, including
• Ramp or step changes in relative humidity
• Automated video image acquisition
• Organic vapor sorption partial pressure
• Temperature stages may be based on fixed-time or user defined dm/dt criteria
• Complex isotherm experiments
• Experiments may include half, full or multiple partial pressure or temperature cycles

• Isotherms
• Permeability and diffusion
• Kinetics information
• Heat of sorption
• Tg determinations
• Amorphous content

21CFR Part 11 software solution is available for all DVS software upon request.

UltraBalance™ low mass
Sample mass: between 1 and 1000mg
Mass change: ±150mg
Resolution (precision): 0.1 μg
Root mean square
balance noise: ≤ 0.3 μg

UltraBalance™ high mass
Sample mass: between 10 and 5000mg
Mass change: ±1000mg
Resolution (precision): 1 μg
Root mean square
balance noise: ≤ 3 μg

DVS Endeavour Schematic

For more information, email [email protected].

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