儀器簡介：
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. 

Software 
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 
 detergency   ecology 



技術(shù)參數(shù)：
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 
Display 
- graphic display bw 320 x 240 pixel 
Min. volume test liquid 1 ml 
Temperature range 10 .. 80°C 

Experimental time: 
- 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 
Power requerment: 
- 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 
Technical Data:

主要特點：
Features 
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 
immersion 
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