Here, you can find the lastest news from DataPhysics Instruments, covering new developments in our company. By signing up to our newsletter , you can easily stay up to date. Press review: A meeting with major impact: chemie. The measuring device manufacturer DataPhysics Instruments has expanded its product portfolio with the addition of the MBP Bubble Pressure Tensiometer for measuring the dynamic surface tension of liquids.
The MBP is ideal for investigating processes in which liquid droplets are produced at a high speed, such as inkjet printing or spraying processes. The MBP is a stationary laboratory instrument for the precise determination of the dynamic surface tension of liquids. Dr Sebastian Schaubach, Innovation Manager at DataPhysics Instruments, says: With the MBP Bubble Pressure Tensiometer, we have been able to add an important parameter to our analysis spectrum and thus provide users with another highly specialised and high-precision measuring device in our product portfolio.
The surface tension describes the energy required to increase the surface area of a liquid against a gaseous phase, such as ambient air. The surface tension is an important parameter in assessing how easily a liquid separates into droplets or spreads on a solid surface. In practical applications, surface tension is often modified by adding surface-active substances, such as surfactants, to the liquid mixture. When a new surface is created in a liquid solution, for example by the formation of gas bubbles, surface-active particles or molecules migrate to the newly created surface.
This increases the number of surface-active particles per unit area and reduces the surface tension of the liquid. Subsequently, the system reaches equilibrium: the surface-active particles or molecules stop migrating, and their number on the surface and the surface tension remain stable.
The speed at which surface-active substances accumulate on the surface is a characteristic value for each mixture. This parameter is relevant for the investigation of many industrial processes, such as the wetting of surfaces at high speed during spray processes in inkjet printing, spray coating, or plant protection.
