- Range of surface and interfacial tension 10 to 100 mN/m;
Reproducibility ov measured values ± 0.1 mN/m
Accuracy of surface tension ± 0.1 mN/m
Dynamic time range 0.1 ms to 100 s
- graphic display bw 320 x 240 pixel
Min. volume test liquid 1 ml
Temperature range 10 .. 80°C
- Standard mode (M1) 20-30 min
- Fast mode (M4) 4-6 min
Software Windows software (free update over 1 years after purchase)
Number of measurement point:
- All scan modes (M1, M3, M4) max. 180
- Constant mode (M2) min. 30000
Memory on board 2 MB
Process controlling option on board (on request)
Dimensions (L x W x H): 200 x 250 x 400 mm
Weight: 3 kg
- Measurement unit 12 VDC
- Power supply 100 … 240 AC; 50 … 60 Hz
- Max. power consumption 6 W
Extra accessories capillaries of different diameter and design
direct and precise measurement of dead and life time
surface tensions as function of physical time and adsorption time
available time interval of 6 orders of magnitude (0.0001 to 100 s)
precise measurement of scientific dynamic surface tensions
direct determination of the hydrostatic pressure via automatic capillary
correction of effects from gravitation and viscosity of the liquid
estimation of liquid’s viscosity
temperature monitoring and control of the sample
can be run also without PC
- New development based on more than 10 years of experience in bubble
pressure measuring technique. Many new instrumental details have been
published recently, such as the determination of bubble time characteristics
from the gas flow signal. To reach the extra short times of milliseconds and
less, the special measurement routine of Fainerman is applied.
Can work as stand-alone, graphic display on board.
Unique instrument for measurements down to 0.1 milliseconds.
The BPA-1S represents the high end instrument of bubble pressure
tensiometry, and the BPA-1P is its simplified version.
BPA-1S can operate as stand-alone
instrument. It stores data on board for 180
measurements which can be downloaded to
a PC (both RS232 and USB port on board).
The software allows graphical display of
several measurements for comparison.
Graphics with various zoom functions
supports the visual analysis of the data.
Export as text file or directly into MS Excel.
Unique instrument for very short adsorption
times down to 0.1 milliseconds due to the
application of the Fainerman measuring routine. Automatic and manual
determination of the critical flow rate. Required small bubble volume and deadtime
possible due to specially designed capillaries.
Fields of Application
surfactant science pharmacy
ink jet printing cosmetics
coating technology food technology
foam and emulsion technology medicine and biology