BPT Mobile – Bubble Pressure Tensiometer
The BPT Mobile is a compact, portable instrument for measuring dynamic surface tension using the bubble pressure method. Ideal for fast quality checks of surfactant-containing baths in cleaning and coating processes.
BPT Mobile – Bubble Pressure Tensiometer
Mobile quality control for cleaning and coating baths
Immerse – click – read: With the BPT Mobile, you can determine the surfactant concentration in a bath within seconds via surface tension (SFT). The instrument provides an immediate evaluation to show whether the bath is within specifications. It also helps track how surfactant content changes over time, supporting proactive bath management.
Applications
☑️ Detergent concentration in cleaning baths (e.g., before coating or bonding)
☑️ Wetting agent concentration in electroplating baths
☑️ Monitoring of acid mist mitigating agents in electrolyte baths
☑️ Quality check of other coating baths (e.g., for solar cells)
☑️ Monitoring of etching baths (e.g., for circuit boards)
Measuring Methods
☑️ Dynamic surface tension using the Laplace pressure of a gas bubble at a capillary in a liquid
Measuring Results
☑️ Surfactant concentration
☑️ Dynamic surface tension at a defined surface age (as a single point or over time)
☑️ Dynamic surface tension across a surface age range
☑️ Temperature of the tested liquid
Includes all software it needs
The BPT Mobile works independently from a computer or the power grid and is simply recharged via USB. Up to 20 million results find room in a clear folder structure. The display shows all necessary graphical representations and makes evaluation in other software obsolete – yet possible thanks to a fast data export to Excel.
Don’t bother with subsequent cleaning
We have replaced costly, high-maintenance permanent capillaries that are customary for the bubble pressure technique with disposable ones. Inserting and ejecting them is a matter of seconds, cleaning them a matter of the past. The temperature sensor, which is read for each measured value, can also be quickly removed when testing soiling or corrosive solutions.
Three measuring modes for every QC task
➡️ With just a click, a Monitoring measurement gives a quick result for the regular quality check and evaluates it using pre-defined quality limits. Charts of previous results, even independently for several baths, help to estimate when the content will leave the quality range so you can intervene in time.
➡️ Measurements in the Continuous mode record a live value over time. When adding the active substance, you instantly see the effect and know exactly when to stop.
➡️ The Dynamic mode is designed for setting up the quality process. The instrument calculates the relation between concentration and SFT and also finds the optimum bubble formation rate (surface age) for the subsequent monitoring measurements.
Quality at a touch
With the intuitive touch display, working with the BPT Mobile is almost like doing quality tests with a smartphone. Thanks to the large display, it is easy to tap the functions error-free – even while wearing lab gloves. Quality control is user independent due to programmed measurement templates as well as the instrument’s insensitivity to changing immersion depths.
