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Krüss DFA100

  • Foamability and foam decay characteristics with patented foam parameters tdev and ttr
  • Contact-free (optical) measurement of foam height
  • Foam generation with controlled gas flow or by stirring
  • Sample volume min. 20 ml
  • Temperature controlled measurements up to 90°C

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Krüss DFA100

Foam plays an important role in numerous products and technical processes – either intended or as an unwanted side effect. In both cases measurements with the Dynamic Foam Analyzer DFA100 provide help. New foam parameters oriented on foam decay kinetics as well as traditional foam parameters provide practically relevant information about foam formation, stability and decay. Easily exchangeable modules for reproducible foam generation and contact-free measurement, quick cleaning and flexible software, which permits several independent measurements to be made simultaneously, ensure a high degree of usefulness in the laboratory.

Whether warmly welcome or an uninvited guest: foam occurs almost everywhere that liquids are in motion. The DFA100 gets to the bottom of foam properties and provides knowledge that makes a contribution to foam generation or foam avoidance. With its conventional and newly developed, meaningful foam decay parameters, a flexible, modular design and intelligent software with repeating and parallel measurement options, the DFA100 is a competent partner in the foam testing laboratory.

Cleansers / Detergents
Depending on the application, foam is either indispensable or unwanted in mechanical cleaning processes. The efficiency of foaming agents and foam stabilizers or defoamers is tested with the DFA100.

Food
Whether permanent edible foam, short-term stable foam in beer and cappuccino or rapid foam generation in sparkling wine – food covers the whole range of foam stability. The DFA100 provides results for short and long foam decay periods.

Process water and wastewater
Foam interferes during pumping and stirring and increases space requirements in tubes and boilers. Analyses with the DFA100 make a contribution to foam reduction.

Biotechnology
Mixtures in bioreactors contain natural surfactants and form unwanted foam. The DFA100 is used for optimizing process control.

Antifoamers / Defoamers
Antifoaming agents are used in printing ink, washing and dishwashing agents – even in leather manufacture. Their effectiveness can be checked with the DFA100.

Body care
Bath additives, shampoo, shaving foam – a particular foaming and stability behavior is expected in each care sector. Measurements with the DFA100 help to achieve the required properties.

Surfactant development
The parameters developed for the DFA100 describe stable and unstable foams according to the same dynamic decay model and can be correlated with characteristics such as the modulus of elasticity. This makes the DFA100 a useful tool in surfactant research.

Fire fighting
Light water – medium-expansion foam – high gas-fraction foam: fire fighting foams for different fields of application vary chiefly in their water content. Drainage time and the liquid fraction can be measured with the DFA100.

Polymer foam
Water content and stability of the liquid starting foam influence the character of the polymer. The results of measurements with the DFA100 help with the material design of the rigid foam.

Flotation
During foam formation particles become concentrated in the foam layer which is then removed – for example during de-inking in the paper recycling process or during ore mining. Effective foaming agents can be found with the DFA100.

Paints and inks
Foam in paints and inks causes coating defects and printing faults. Foam suppression additives can be studied with the DFA100.

 

 

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