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Me-Sep is an authorized distributor of POROMETER

POROMETER is a German-Belgian company which consists of an international team of experts in the area of porometry, bubble point, mean flow pore size analysis, and liquid permeability characterization.

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MEMCAST™ (Plus)

The automatic film coater MEMCAST™ is ideal for the synthesis of flat sheet polymeric membranes by coating a thin film of a polymer solution followed by the immersion of the films in a coagulation bath to obtain the final membrane via wet phase inversion. Reproducible film layers can be prepared, either self standing (e.g. coating directly onto glass, stainless steel, etc.) or on various substrates (e.g. nonwoven, polymeric supports, etc.).

The design minimises movement during film application in order to obtain smooth and consistent films. It is robust, durable, easy to clean and very user-friendly.

Dimensions (approx.) 780 x 490 x 320 mm Weight (aprox) 29 kg (64 lb)
A wide range of single line and high throughput casting knives is available offering different coating thickness, ranging from 50 μm up to 1000 μm. The user can select the number of coating lines, comprised between 1 and 8.

SPECIFICATIONS

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COMMON TO ALL MODELS

  • Includes a flat coating plate
  • Easy mechanism to attach/detach the coating support, allowing fast immersion in a coagulation bath
  • Automatic return of the pushing mechanism at the end of the coating length
  • Optional stop of the pushing mechanism during application to determine the length of the coating

POROLIQ™ 1000 series

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.

HOW DOES THE POROLIQ™ 1000 WORK?

It is the first LLP equipment based on a pressure driven concept, which guarantees the maximum accuracy, especially when measuring pore sizes in the submicron range.

A measurement consists first of complete saturation of the porous membrane with a wetting liquid. The subsequent displacement of the wetting liquid from the pores is achieved by a second, immiscible liquid (displacement liquid). The pressure (P) required to expel the wetting liquid out of the pore depends on its diameter (D) as expressed by the Young-Laplace equation P=4*γ*cos θ/D , where γ is the interfacial tension betwen the wetting and displacement liquid. Typical interfacial tension values lie between 0.35 and 4 mN/m. This allows pores as small as 2 nm to be probed or, in comparison to traditional gas liquid porometry, for the use of more moderate pressures to test traditional submicron pore size ranges.

By measuring the flow rate of liquid thorugh the sample, a complete pore size distribution can be obtained.

THE MOST ACCURATE LLP ON THE MARKET

  • 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.

SPECIFICATIONS

Automatic switch between the pressure sensors and the flow meters during a measurement The best sensor is automatically selected to optimise the accuracy and resolution in the full pressure and flow range

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WORKING SCHEMA

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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

POROLUX™ 100/100NW/100FM and 500 - The Pressure Scan Series

The POROLUX™ 100/100NW/100FM and 500 are gas liquid porometers based on the pressure scan method developed for the rapid measurement of through-pores in materials such as filters, nonwovens, textiles, paper, membranes, hollow fibres, etc.

PRESSURE AND FLOW RATES RANGE

Starting from instruments that go up to 1.5 bar (22 psi), such as the POROLUX™ 100NW, up to 35 bar (500 psi), POROLUX™ 500. The maximum flow rate can be 100 or 200 l/min depending on the model and the application. For details please see the table of specifications for each model.

SPECIFICATIONS

STANDARD SAMPLE HOLDERS

All POROLUX™ porometers come with a 25 mm sample holder. Other standard sample holders have a diameter of 13 or 47 mm.

POROMETER can create costumer specific designs for special samples: thick samples, large diameter samples, assembled filter-setups, etc. Please contact us for details and price.

UNIVERSAL SAMPLE HOLDER FOR 25 MM DIAMETER FOR THICKER SAMPLES

Universal sample holder for samples of thickness up to 10 mm.
Maximum pressure: 35 bar.
Also available for 13 mm diameter samples.

  • Universal sample holder for samples of thickness up to 10 mm
  • Maximum pressure: 35 bar
  • Also available for 13 mm diameter samples

HOLLOW FIBRE AND TUBULAR SAMPLE HOLDER (SHHF)

The characterisation of the pore distribution of hollow fibres and tubes requires relatively high pressures and a limiting factor is often the burst pressure of the hollow fibre. Therefore, safety is often as concern.

We have developed a stainless steel sample holder in which one or more hollow fibres can easily be glued. With this sample holder very reproducible results can be obtained.

  • The pressure can be applied from the outside to the inside or vice versa
  • Maximum pressure: 35 bar*
  • Includes replaceable O-rings
  • Resistant to silicone and epoxy glues
  • Easy cleaning of the assembly

* This is the maximum pressure that the hollow sample holder can withstand. The maximum pressure allowed in each experiment will depend on the mechanical resistance of the hollow fibre.

IN-PLANE POROMETRY SAMPLE HOLDER

Special parts and accessories to carry out in-plane porometry measurements. Only available for 47 mm sample holders.

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KEY FEATURES

  • Gas-liquid displacement porometer based on the pressure scan method: the applied pressure and the resulting gas flow are measured continuously.
  • Full flexibility with the highest accuracy in the full pressure range (up to 35 bar/ 500 psi).
  • Very fast and reproducible measurements of first bubble point, maximum pore size, mean flow pore size, minimum pore size, pore size distribution and gas permeability.
  • Ideal for quality control work.