Product Overview

The KRUSS BP100 Bubble Pressure Tensiometer measures dynamic surface tension with high accuracy to reliably analyse the mobility of surfactants, enabling high-speed processes such as spraying, coating, printing and cleaning to be optimised.

Analysis of surfactants for high-speed processes
Using a high precision pressure senor the BP100 measure the SFT of a surfactant solution based on the internal pressure of gas bubbles produced in the sample by a capillary. The instrument adjusts the required surface age and enables its correlation with the SFT in a wide dynamic range of 5 to 200,000 ms. This allows users to determine how quickly a surfactant acts and after how much time the required SFT has been reached.

Reliable methods for checking the surfactant content
The dynamic SFT responds to changes in the surfactant content of the solution which can be measured using the BP100. This is particularly useful in applications such as galvanic or cleaning baths.

The BP100 allows for simple operation from the rapid capillary change and automatic surface detection to pre-prepared and flexibly adaptable fully automatic measuring programs. A motorised sample stage, illuminated measuring chamber and integrated stirrer can be operated using the intuitive control panel. The ability to control temperatures between -10 to 130 °C allows thermal process conditions to be simulated and subsequently easily transferred to large scales. The use of disposable capillaries simplifies analysis of contaminating or solidifying liquids such as inks or varnishes. 

With integrated and easily programable measuring templates, the software for the BP100 reduces preparation time to a minimum and supports simple results management with automatic diagrams and reports. The mobility of surfactants can be determined by means of the adsorption coefficient and diffusion coefficient which provides a comprehensive analysis of surfactant behaviour over time.