/en/products-services/accessories /en/products-services/products

Dynamic Foam Analyzer


Analyzing liquid content and drainage of foam

Dynamic Foam Analyzer – DFA100LCM for liquid content and drainage of foam

The LCM Liquid Content Module for the DFA100 measures the moisture of foams with respect to time on different foam height levels. The results are obtained by detecting the foam's conductivity as a proven method. They provide you with knowledge about a foam’s stability and help you optimize products where moisture plays a key role, such as washing foams.


  • Foams for washing and cleaning

  • Foams in food and personal care products

  • Surfactant development

  • Firefighting foams

  • Flotation as a method for separating solids

Measuring methods

  • Foamability and foam stability using the optically detected height of foam created reproducibly

  • Foam formation behavior of heavily foaming liquids using stirring cycles

  • Optically detected foam bubble sizes and their statistical distribution

  • Moisture and drainage behavior of foam using its electrical conductivity

  • Carrying out a measurement up to 20 consecutive times and displaying the results together

Measuring results

  • Maximum liquid content after foam formation

  • Time for reduction of liquid content to 75%, 50%, and 25% of initial value

  • Drainage curve

  • Each result at up to seven height levels in parallel

  • Additional results for foam height and volume from DFA100 main instrument

Fast measurement of foam stability

In addition to showing moisture as a direct quality criterion for foam, liquid content measurement also reveals the stability, because the discharge of liquid from the foam lamellae (drainage) is the first sign of decay. Therefore, accurately measuring the liquid content as a function of time is ideal for evaluating foams in the range of long-term stability. Since it is not necessary to wait until the foam height decreases, detecting moisture can save measuring time and significantly increase sample throughput.


Scientific characterization of foam

Foam in everyday products as well as technical applications appears in manifold forms and is often produced on purpose, but can also be undesired. Our DFA100 characterizes almost every aspect of foam, putting a wide range of methods into practice with impressive ease of use.

Accurate moisture analysis at seven height levels

The liquid content is measured simultaneously at up to seven height increments of the foam. This accurate high resolution shows how uniform the foam is and how the homogeneity changes with time. This information is relevant for many foam products, such as food foam, which should have the same consistency everywhere, even after a long time. Liquid content measurement can be carried out simultaneously with foam height detection and foam structure analysis.

ADVANCE Software

Automatic analysis and powerful evaluation

The simple operation of the instrument goes hand in hand with the intuitive user interface of our ADVANCE software. Easy to create automation programs control the measurement run and allow cyclical repetitions. The synchronous display of all time-related data for foam height, bubble structure, and liquid content is particularly convenient.


  • Intuitive software with a workflow-oriented user interface

  • Swift and repeatable analyses thanks to measurement templates and powerful automation functions

  • Result management made easy with clear and comprehensive charts and tables

  • A wide range of results describing foam formation, stability, and decay

To the top