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Home / Dynamic Vapor Sorption (DVS) Analysis
Dynamic Vapor Sorption

Dynamic Vapor Sorption (DVS) Analysis

The dynamic vapor sorption method is used in laboratories world-wide to examine the intriguing moisture sorption behaviour of materials. DVS is used in the industry as well as in academia. It is applied in pharmaceutics for salt-screening and to analyse polymorphism. In food research it is used in stability and shelf-life studies as well as to investigate moisture migration between ingredients in a food product. DVS helps to develop sophisticated packaging materials by measuring the water vapor permeability of films and foils. It is also a valuable tool to asses the caking behaviour of powdered and granular material during transport, storage and handling. In building physics it is used to analyse water uptake and release of insulation and construction materials made of wood, plaster, fibres or concrete. In the electronic industry moisture induced failure of componenents is of interest. Originally developed for pharmaceutical research, dynamic vapor sorption nowadays is used in a continuously growing number of DVS applications.

Dynamic Vapor Sorption Instruments

ProUmid manufactures and sells two series of multi-sample dynamic vapor sorption instruments that cover all kind of moisture sorption applications.

dynamic vapor sorption SPS

SPS series

The multi-sample sorption system SPS is a synonym for highest precision and reliable measurements over a wide temperature range. With the available four SPS models, different in precision and load range of the micro-balance, the SPS covers all applications areas from pharmaceutical pre-formulation to building materials. Read more about the vapor sorption analyzer SPS…

Vsorp series

The Vsorp is an easy to operate, innovative instrument designed for measurement tasks at moderate temperatures used in research, development and quality assurance. It combines easy operation and minimized maintenance requirements with a robust design. Discover the moisture sorption analyser Vsorp…
Vsorp with closed transparent cover

Not sure which DVS system is right for your application? Please try our online product advisor

Product Advisor
dynamic vapor sorption samples

Dynamic vapor sorption method

The basic operation principle of a gravimetric sorption analyser is to measure the change in mass over time of a sample that is kept in an environment of controlled and constant temperature and relative humidity. Change in mass takes place either by water sorption (uptake) from the surrounding air to the sample or water desorption (release) from the sample.

Sorption kinetics curve – single humidity step

After a change in relative humidity, e.g. to a higher humidity, uptake or release of water by the sample is determined gravimetrically by means of a microbalance at defined time intervals. At the early stage of sorption/desorption, the change in weight is large. Over time, the process approaches an equilibrium and the change in weight is continuously getting smaller.
schematic sorption cinetics curve
sorption cycle

Sorption cycle – multiple humidity steps

When the sample weight is finally stable, it is at equilibrium with the surrounding atmosphere. The measurement is then continued at the next humidity step (lower or higher relative humidity). Typically, one or more complete sorption/desorption cycles (sorption from low to high RH and desorption from high to low RH) in small RH steps are done.

Sorption Isotherm

The individual equilibrium data points from all humidity steps of the sorption/desorption cycles are used to generate the sorption isotherm. The sorption isotherm is the relationship between the water content of a sample and the relative humidity of the ambient air at a particular temperature.
sorption isotherm

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    DVS Product Advisor

    Step 1: Select temperature range

    Step 2: Select additional sensors

    Step 3: Select additional measurement methods

    Step 4: Select instrument by sample size, sample sorption capacity or the type of application.

    If you can tell us about the samples you want to analyze, the available sample quantity, the sample hygroscopicity or your area of application, we can give you a recommendation for the device that meets your requirements best.

    Step 5: What is the average sample quantity available and/or how hygroscopic are the samples?

    Tiny: <10mg, very low hygroscopicity
    Small: >10mg, low hygroscopity
    Medium: >100mg, moderate hygroscopicity
    Large: >500mg, abundant hygroscopicity

    Step 5: Which field of application is most likely to apply to your samples?

    A: Pharmaceutical pre-formulation
    B: Pharma, Food, Fine Chemicals, Cosmetics, Material characterization, Polymers, Electronics, Fibres, Paper, Wood Analytics, Textiles
    C: Building Materials (concrete, wood, insulation), Fertilizer, Permeability and Packaging testing

    Recommended Instrument(s):

    Additonal sample trays such as the Permeability kit and the requirement for tiny samples do not match.
    Try to deselect the additonal sample tray or to increase the sample size.

    Additonal sample trays such as the Permeability kit and the application pharmaceutical pre-formulation do not match.
    Try dp deselect the additonal sample tray or to select a different field of application.

    Outside view of the product SPS23-100n

    SPS23-100n


    The SPS23-100n is a highly sensitive system with a gravimetric resolution of 100 nanogram. It is designed for applications where only very small quantities of sample material are available like in pharmaceutical preformulation. Read more about the SPS23-100n...

    vapor sorption analyzer - SPS - glass lid open

    SPSx-1µ-Advance


    The SPSx-1µ Advance model shows best weighing peformance and a very high reproducibility of better than ±2µg at a gravimetric resolution of 1µg. Small and medium sized samples are measured at extremely high resolution over the full load range from 10mg up to 22g. Read more about the SPSx-1µ-Advance...

    vapor sorption analyzer - SPS - glass lid open

    SPSx-1µ-High-Load


    With its dual weight range, the SPSx-1µ High Load enables to analyze small samples at a very high resolution of 1µg (±5µg reproducibility) as well as samples heavier than 22g at a resolution of 10µg. In combination with the largest number of samples that can be measured simultaneously this system is the most versatile vapor sorption analyzer on the market. Read more about the SPSx-1µ-High-Load...

    Vapor Sorption Analyzer – SPS – Big Sample Pans

    SPS11-10µ


    The SPS11-10µ system is a robust and easy to operate multisample vapor sorption analyzer. With the large load range of the balance, the system is perfectly suited for the analysis of bulky or heavy samples and for permeability measurements. Typical fields of application are fertilizer, building materials and packaging material. Read more about the SPS11-10µ...

    Moisture Sorption Analyser - Vsorp

    Vsorp Enhanced


    The Vsorp Enhanced combines very high resolution of 1µg for small and medium samples up to 22g sample mass and 10µg for samples up to 220g sample mass. In combination with the 23 available sample positions, the Vsorp Enhanced is a powerful and versatile moisture sorption analyzer. Read more about the Vsorp Enhanced...

    Moisture Sorption Analyser - Vsorp

    Vsorp Plus


    The Vsorp Plus accomodates small and medium samples at a gravimetric resolution of 10µg for samples up to 220g sample mass. Additional samples trays such as for permeability measurements make this system a versatile moisture sorption instrument. Read more about the Vsorp Plus...

    Moisture Sorption Analyser Vsorp - 5 sample carousel

    Vsorp Basic


    The Vsorp Basic is a very robust and easy to operate multisample moisture sorption analyzer. With the huge load range of the balance and the large sample dishes, it accomodates even the biggest bulky or heavy samples. Typical fields of application fertilizer as well as building materials. Read more about the Vsorp Basic...

      Please send me

      Quotation forInformation on

      Water Vapour Sorption Analyzer SPS
      SPS11-10µSPSx-1µ High LoadSPSx-1µ AdvanceSPS23-100n

      Moisture Sorption Analyzer Vsorp
      Vsorp BasicVsorp PlusVsorp Enhanced

      Disposables, Accessories and Hardware Options
      Option Camera
      Option Raman Spectroscopy
      Permeability Kit 5 samples
      Permeability Kit 11 samples
      Permeability Kit Inverted Wet Cup
      Large Objects Kit
      Membrane Dryer
      Reference Material for Humidity Validation

      Optional Software Packages
      DVS Analysis Software
      21 CFR Part 11 compliant software package

      Humidity Generator MHG32
      MHG32Option TCOption 1000ml/min

      Humidity Generator MHG100
      MHG100

      Powder Conditioner
      Powder Conditioner

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        item no.

        Description

        quantity

        package size

        100913

        sample dishes 18 mm

        box (100 pieces)

        100914

        sample dishes 33 mm

        box (100 pieces)

        100486

        sample dishes 50 mm

        box (100 pieces)

        100916

        sample dishes 86 mm

        box (100 pieces)

        100917

        distance pieces

        set (12 pieces)

        101867

        mesh cover 50 mm

        set (12 pieces)

        101596

        PTFE inserts

        set (12 pieces)

        100485

        secondary sample dishes 38 mm

        box (10 pieces)

        100910

        sample carousel 5 sample positions

        piece

        100908

        sample carousel 11 sample positions

        piece

        100909

        sample carousel 23 sample positions

        piece

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          Please send me the following Application Note / White paper

          Application Notes

          Food

          AN_20-01 Amorphous lactose in food
          AN_20-02 Amorphous fractions in sucrose and sucrose containing model food systems
          AN_20-03 Deliquescence and deliquescence lowering of food ingredients and blends
          AN_20-04 Dehydration behavior of bread crumb and crust

          Pharma

          AN_20-05 Amorphous lactose in the pharmaceutical industry
          AN_20-06 Hydrate formation of L-lysine HCl
          AN_20-09 Hydrate formation of creatine

          Building materials

          AN_20-07 Water vapor sorption of plaster

          Permeability of Packaging material and Foils

          AN_12-01 Water vapor permeability of films

          AN_15-01 Water vapor sorption of product packages

          White Papers

          Universal

          WP_20-01 Amorphous content lactose

          Food

          WP_20-02 Amorphous fractions in sucrose and sucrose containing model food systems
          WP_20-03 Deliquescence and deliquescence lowering of food ingredients and blends

          Pharma

          WP_20-06 Hydrate formation of L-lysine HCl

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                Quotation for

                Contract Analysis: Dynamic Vapor Sorption (DVS)
                Sorptions Isotherm, Sorptions KineticsPermeability, Water Vapor Transmission Rate (WVTR) of foils or packaging materials

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                MSAS Registration

                  The 12th MSAS will be held from 26th to 27th April 2023 in Ulm, Germany.

                  I want to register for the 12th Moisture Sorption Analysis Seminar - MSAS

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                  Details on the seminar venue, seminar program, hotel accomodation and conference dinner can be found on the ProUmid website.

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