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  • Measure, analyse, control

    PRODUCTS // PROPERTIES

    Measure, analyse, control

    The systems we supply are used at all stages in research, development and manufacturing

    Our systems enable you to measure, analyse and control a broad range of properties and characteristics across a wide range of sample types.

LPT400

The LPT400 Liquid Permeability Tester (LPT 400) is designed to determine the liquid permeability and the Silt Density Index (SDI) in technical materials in a pressure range between 50 mbars and 4 bars.

A fully automatic program runs the selected test. The liquid is collected in a receptacle and the weight recorded by a balance is automatically transferred to the operating software, which calculates the liquid permeability.

LPT400 – Measurements

  • Liquid permeability
  • Possibility to perform single or up to 3 measurements simultaneously (at one constant pressure level or on varying pressure levels).
  • Duration of each cycle: up to 10 min.
  • Real time permeability vs time graphic display
  • Permeability results are displayed in Darcy and in l/(m2*h*bar)

SILT DENSITY INDEX (SDI)

SDI measures the percent drop per minute in the flow rate of water through a filter, averaged over a period of time.

  • In each cycle, the system measures the time required for 500 ml of fluid to pass through the sample, following by sample flushing step for 15 min before starting the next cycle.
  • Possibility to carry out up to 12 repeated cycles.


  • Specifications
  • Operating Pressure
  • Liquid Tank
  • Membrane Test cell


  • Flow / Balance Range
  • Dimensions and Weight
  • Liquid Permeability Tester (LPT400)
  • 50 mbar – 4 bar
  • 10-27 litre, made of stainless steel
  • Round samples of 25mm diameter, maximum 10 mm thickness Square samples of 50*50 mm, maximum 10 mm thickness Made of stainless steel
  • 0.05-8.2 kg. In process approx. 0-6 l/min real flow
  • L*W*H: 630*470*1,680 mm, weight: ca. 70 kg

− Custom-made samples holders available upon request, please contact us.

− Includes a balance automatically connected to the operating PC