Characterizes long time stable foams in a reasonable experimental time by using a particular procedure - the new pressure drop technique This is the only instrument for foam analysis based on the pressure drop technique developed by Kruglyakov, Exerowa and Khristov. The important feature is that due o the applied partial vacuum the foam in the measuring cells is essentially homogeneous over the whole foam column. In contrast to other measurement procedures, this is the prerequisite for a compare with characteristic data obtained for free foam films studied under exactly the same conditions (pressure, temperature).
Instrument parts
integrated foam generator in order to produce constant foams
integrated surface tension measurement by maximum bubble pressure method
foam drainage and life time cell with conductivity sensors
performs fully automatic experiments
includes automatic cleaning processes
Features of the instrument
study separately two major processes occurring in foams: foam drainage and foam stability under strictly defined conditions
measure the most important foam parameter in terms of foam stability and foam lifetime at constant capillary pressure in the liquid phase of the foam
distinguish foams from very small differences in their stability, i.e. distinguish between stabilizing ability of surfactants
produce foams of various dispersity and monitor the impact of dispersity on foam drainage and foam lifetime/stability
characterize a whole range of foams from low to extremely stable foams
simulate conditions in a foam similar to those in industrial foams
correlate foam with single foam film properties
monitor changes in foam dispersity occurring during an experiment
run express and very precise experiments
measure the most important foam parameter in terms of foam stability and foam lifetime at constant capillary pressure in the liquid phase of the foam
distinguish foams from very small differences in their stability, i.e. distinguish between stabilizing ability of surfactants
produce foams of various dispersity and monitor the impact of dispersity on foam drainage and foam lifetime/stability
characterize a whole range of foams from low to extremely stable foams
simulate conditions in a foam similar to those in industrial foams
correlate foam with single foam film properties
monitor changes in foam dispersity occurring during an experiment
run express and very precise experiments
Technical Specifications
Measurements: - Foam Stability - Foam Drainage |
|
Reduced pressure | 0 ... 105 Pa |
Min. volume test liquid | 100 ml |
Temperature operating range | 10 – 50°C |
Measurement temperature range | room temperature |
Software | Windows, free update over 1 year after purchase |
Connection to PC | USB |
Size of device (L x W x H) | 346 x 340 x 400 mm |
Weight | 5 kg |
Power supply | 100 … 240 AC |
Max. power consumption | 35 W |