BRAND-NEW
Mobile and Fast Quality Control of Cleaning and Coating Baths
A
t parts2clean 2018, KRÜSS
at a glance. Moreover, the tendency
required or the bath will have to be
presented a novel solution
of the surfactant content becomes
renewed instead of having to react
for quality control of
immediately obvious thanks to the
quickly when a critical SFT value was
industrial baths that contain cleaning
automatic graphical representation
reached. Using measurements in the
or wetting agents. The new Bubble
of the course over any given time
Continuous mode of the instrument, it is
Pressure Tensiometer – BPT Mobile
period. Thus, predictions can be made
even possible to monitor the change in
is an instrument for determining the
about when further dispensing will be
SFT while dispensing a surfactant.
surfactant content by means the solution. Working independently from
Error-free quality control using reference values
a computer or the power grid and
How the SFT correlates with the
providing results within a few seconds, it
concentration and at which surface age
is particularly suitable for regular quality
© KRÜSS
dynamic surface tension (SFT) of a
the bubble pressure method works in
checks.
the most sensitive way depends on the
Whether an industrial bath obtains
kind of surfactant used.
the required cleaning or wetting
The BPT Mobile supports the important
effect depends on the concentration
preparation step of defining the analysis
of free surfactant, which decreases
parameters for the subsequent, quick
over time due to contamination of the
quality routine. For this purpose, the
bath or adsorption at the workpiece.
instrument has a mode for measuring
The dynamic SFT reacts particularly sensitively to changes of the surfactant concentration so that bubble pressure measurements with the BPT Mobile quickly and reliably reflect the bath’s quality.
Time-saving measurements and ergonomic use The BPT Mobile is equipped with a colour touch display for especially simple operation and ensures that every desired function is accurately triggered thanks to the comfortable size of 5’’. The display also responds to the touch with lab gloves without any problems. The instrument saves time particularly due to the ad-hoc analysis of the results. Whether the measured value lies within a defined quality range is visible
98
N. 55 - JANUARY/FEBRUARY 2019 - international PAINT&COATING magazine
Figure 1: Bubble Pressure Tensiometer – BPT Mobile for quality control of industrial baths containing cleaning or wetting agents.