DVS Endeavour - 5X Parallel Gravimetric Sorption Analyzer

DVS Endeavour has 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.

Key Measurement Capabilities

  • Simultaneously 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 vapor sorption isotherms from 5 to 85 °C
  • Organic vapor sorption isotherms from 5 to 50 °C
  • In-situ drying of samples to 300 °C
  • Optional Color Video Microscopy/Fiber Optic Probe Spectroscopy
  • True™ drying at 0.0%RH

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Instrument Specs


Temperature controlled enclosure
Control range: 5 °C to 85 °C
Regulation accuracy: ±0.01 °C
Enclosure provides anti-condensation protection.

High-temperature pre-heater for sample drying/activation

Two temperature options: 150 °C and 300 °C (maximum local temperature)
Heating ramp rates: up to 10 °C/min
Sensors: Pt-100 thermocouple

Endeavour stand

Manifold: 316 stainless steel
Seals: Viton
Tubing: 1/4-inch stainless steel

Water Reservoir

Material: glass
0.5 and 1 L as standard

Relative humidity mass flow controllers and capacitance probe

High accurate digital mass flow controllers and capacitance probe

Relative humidity generation and measurement

High accuracy digital mass flow controllers for vapor and gas delivery

Relative Humidity Sensor

  • Relative humidity range from 0 to 98%
  • RH range accuracy from 5 – 60 °C ±1%
  • RH range accuracy from 60 – 85 °C ±2%

UltraSonic Sensor

  • Partial Pressure range from 0 to 90%
  • Partial Pressure accuracy from 5 – 25 °C ±2%
  • Partial Pressure accuracy from 25 – 85 °C ±1%

System Software

Next generation purpose built control and evaluation software for the most advanced experimental design and data analysis.


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


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.

Mass measurement

Ultrabalance 1

  • Low Mass SMS microbalance
  • Sample mass: between 1 and 1000 mg
  • Mass change: ±150 mg
  • Resolution (precision): 0.1 μg
  • Root mean square
  • Balance noise: ≤ 0.3 μg

Ultrabalance 2

  • High Mass SMS microbalance
  • Sample mass: between 10 and 5000 mg
  • Mass change: ±1000 mg
  • Resolution (precision): 1 μg
  • Root mean square
  • Balance noise: ≤ 3 μg

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