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The POROLIQ™ 1000 is a Liquid Liquid Porometer (LLP). This rapid, precise method employed by the POROLIQ™ 1000 allows for testing of pore size down to 2nm and, compared to other techniques, uses lower pressures for characterisation of traditional micro-, nano-porous materials. 



  • Based on the pressure step/stability method: a data point is only recorded when the user-defined stability algorithms are met for both pressure and flow.
  • Detects the opening of a pore at a certain pressure and waits until all pores of the same diameter are completely opened before accepting a data point.
  • The POROLIQ™ 1000AQ uses a combination of three ultrasensitive liquid flow sensors to measure exactly and accurately flow rates from 0.16 μl/min (to detect the displacement of wetting liquid out of the pores from the very beginning).
  • Ideal for full characterization of hollow fibers at low pressures.



Pressure and Flow Rates Range 

Measuring principle Pressure driven Pressure driven
Max pressure 40 bar 40 bar
Measurement range 0.3 µm – 2 nm 1 µm – 2 nm
Flow range 0.3 µl – 10 ml/min 1 µl – 10 ml/min
Sample holders Flat sheet 25 mm diameter
Hollow fibre
Flat sheet 25 mm diameter
Hollow fibre
Special sample holders Available upon request Available upon request
Pressure sensors 50 bar 50 bar
Displacement liquid Water Multiple liquids


 Parameters Measured 

  • First Flow Point (FFP) size,flow and pressure
  • Pore size flow distribution
  • Mean Flow Pore (MFP) size and pressure
  • Total pore number
  • Smallest Pore Size (SP) pressure and number
  • Total pore area (% and μm²)
  • Mean Pore Diameter (MPD) and pressure
  • Liquid permeability
  • Cumulative flow distribution
 Operating Software
  • LabVIEW™ software for data acquisition and instrument control with intuitive selection of all analysis parameters
  • Universally available PLC technology (National Instruments) with own runtime system
  • Easy export of results to Excel, Word and pdf file
  • Windows compatible
  • Advanced service menu facilitates diagnosis and service via Internet