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Contact Angle & Surface Tension Tensiometry & Surface/Interfacial Tension Measurement

MBP – Bubble Pressure Tensiometer

Part Number: MBP

The MBP 200 by DataPhysics Instruments employs the maximum bubble pressure method to accurately measure dynamic surface tension of liquid solutions. Gas is directed through a capillary into the liquid; the internal pressure of the forming bubble is recorded at its peak, which corresponds to distinct bubble age and pressure values. This enables dynamic tension readings across a broad range of 5 ms to 200 s, and 10–100 mN/m, suitable for surfactants, oils, and more. With optional temperature control (-15 °C to 135 °C) and dosing accessories, it offers comprehensive surface chemistry analysis in labs or production environments.

                                                
                                                    Wide Dynamic Range: 10–100 mN/m in 5 ms–200 s                                                
                                            
                                                Captures dynamic surface tension from rapid bubble formation to equilibrium, empowering users to observe surfactant kinetics and fluid aging behaviors.

                                                
                                                    High-Pressure Capability up to 3,400 Pa                                                
                                            
                                                Enables measurements of highly viscous liquids and industrial oils, thanks to robust pressure sensing.

                                                
                                                    Temperature-Controlled Sampling from –15 °C to 135 °C                                                
                                            
                                                Optional Peltier or liquid circulator systems allow dynamic tension testing under varied thermal conditions.

                                                
                                                    Flexible Capillary Options                                                
                                            
                                                Supports both reusable glass and disposable plastic capillaries, minimizing cleaning effort and reducing cross-contamination.

                                                
                                                    Automated Dosing and Concentration Series                                                
                                            
                                                With the LDU 25 liquid dosing unit, enables automated surfactant concentration sweeps, visualizing concentration-dependent tension behavior.

                                                
                                                    Safety Features to Protect Capillaries                                                
                                            
                                                Splash guard and collision protection ensure long capillary life and device reliability.

Specification	Value
Dynamic Surface Tension Range	10 – 100 mN/m
Surface Age Range	5 ms – 200 s
Pressure Measurement Resolution	Up to 3,400 Pa differential
Sampling Rate (Bubble Pressure)	25,000 Hz
Sample Stage Travel	105 mm range, 46 nm/s – 12 mm/s resolution 24 nm
Temperature Range	–15 °C to 135 °C (Peltier); –10 °C to 130 °C (liquid circulator)
Temperature Sensors	2 × Pt100 inputs (–60 °C to +450 °C, ±0.01 K)
Weight & Dimensions	22 kg; 360 × 230 × 565 mm
Power Supply	100–240 VAC, 50/60 Hz, 70 W
Control & Interface	TP 50 touchscreen optional; PC control via MBPSoftware
Software Functions	Single/sweep ages, concentration series, adsorption/diffusion coefficients