Determination of cleaner or surfactant concentration using surface tension
Step 1
Analyzing different concentrations with the help of the AUTO-mode to determine a bubble lifetime (bubble frequency) that allows optimal differentiation of concentrations (highest distance of measuring points). |
Step 2
Recording of a reference curve (surface tension above concentration) at the determined optimal bubble lifetime (30 ms) with 7 to 9 differently concentrated approaches as shown in the picture below.
Step 3
Measuring the surface tension of the sample with an unknown cleaner concentration in ONLINE-mode or in SINGLE-mode with the determined bubble lifetime (30 ms). |