ipBLACK - Dyed Polycarbonate (PC) Membrane Filters
From ipBLACK - Track-Etched Membrane Filters
Standard thickness: manufactured from 25 µm thick PC film.
Material
- polycarbonate (PC)
Pore Size & Thickness
- pore size from 0.2 µm to 5.0 µm
- standard thickness
Color
- true black color with no background auto-fluorescence
Other Properties
- options for grey color and PVP treatment (hydrophilic)
- suitable for sterilisation (gamma-rays)
- smooth and flat surface with a low non-specific absorption ensuring the capture of all micro-organisms in one plan (no micro-organism captured within the bulk filter)
Key Features of Track-Etched Membrane Filters
RAW MATERIALS FOR TRACK ETCHED MEMBRANE FILTERS
We apply track-etching technology to fully transparent POLYCARBONATE (PC) and POLYESTER (PET) raw films, as well as to brownish yellow POLYIMIDE (PI) film, available in various thicknesses ranging from 6 to 50 microns.
All our raw materials (films) are exclusively proc...
All our raw materials (films) are exclusively processed by extrusion without using solvent, excepted those marked with an (*) in the table below which are also available as cast film.
We only use high quality materials providing their intrinsic properties to all track-etched membrane filters: low extractable, low protein binding, negligible adsorption and absorption, biocompatibility, excellent chemical resistance and thermal stability.
Available thicknesses for raw materials
Intrinsic properties of raw materials
Intrinsic properties of raw materials
Used polymer films provide their intrinsic properties to track-etched membrane filters: low extractable, low protein binding, negligible adsorption and absorption of filtrates to maximise critical solution recovery, biocompatibility, excellent chemical resistance and thermal stability.
UNIFORM PORE SIZE BY TRACK-ETCHING
The physical mechanism at the base of the pores appearance during the track-etching process ensures a precise and uniform pore diameter, intrinsically yielding a narrow pore size distribution and providing sharp cut-off filters.
This outstanding shape and dimensional control enable efficient and accurate size exclusion of particles during any filtration process, this make them suited for the most demanding filtration operations, and also for more specific demands such as template for the synthesis of 1D nano- or micro-objects.
(left) Slightly tilted pictures of the surface of ...
(left) Slightly tilted pictures of the surface of a track-etched membrane filter showing regular and homogenous pores (right) transversal cut showing straight and cylindrical pores crossing all the membrane filter thickness pore diameter = 0.4 micron (by scanning electronic microscopy)
WIDE RANGE OF POROSITIES AND FLOW RATES
WIDE RANGE OF POROSITIES AND FLOW RATES
Track-etching technology is most suitable for an independent control of both pore size and pore density: pore density is defined during the first step of the process while pore size is defined by etching conditions.
Current beaming conditions can be finely tuned to obtain a pore density ranging from 1,000 pores per square centimetre to more than 1E+09 pores per square centimetre.
Air and water flow ranges – in L min-1 cm-2 ...
Air and water flow ranges – in L min-1 cm-2 @ 0.7 bar (10 PSI)
Selection of pore size and of pore density, combined to the choice of filter thickness, enable the manufacturing of track-etched membrane filters characterise by a wide range of water and of air flows.
Suitability for advanced pore structure
Suitability for advanced pore structure
If common track-etched membrane filters are made of multi-angle pores, the flexibility of the beaming process enable us to achieve alternative porous structures.
Track-etched membrane filters with +45°/-45&de...
Track-etched membrane filters with +45°/-45° pores are commonly used as template for the synthesis of 3D interconnected nanowire networks.
SCREEN FILTERS IDEAL FOR ANALYSIS OF RETAINED PART...
SCREEN FILTERS IDEAL FOR ANALYSIS OF RETAINED PARTICLES
Because of the homogeneity of the pore size and of the pore shape created by the track-etching process, track-etched membrane filters used for filtration retain all particles larger than the pore size on their flat and smooth surface. The retained particles are therefore easily recovered or easily detected and analysed by any appropriate detectors.
More about Dyed Polycarbonate (PC) Membrane Filters
Basics of Track-Etching Technology
Beaming of raw polymer films
Heavy ions are generated by a ion source and then accelerate by a cyclotron to energy as high as 4 MeV/uma.
For the beaming, the polymer film is unwounded at a constant speed under vacuum through the scanned ion beam ; the tracks density (or desired pore density) is therefore precisely defined by the ion beam intensity and the film velocity.
The film is pulled over a bending roll to increase the angular spread of the tracks, and thus raise the selectivity of the membrane filters by avoiding parallel double tracks.
Chemical etching of beamed polymer films
Chemical etching of beamed polymer films
Linear tracks created during the beaming are mainly characterised by macromolecular chain scissions, highly hydrophilic chemical groups and free vacuum.
Tracks are therefore more sensitive to chemicals than surrounding bulk polymer, and can be selectively etched leading to their revelation into pores.
Chemical etching is commonly carried out with an a...
Chemical etching is commonly carried out with an aqueous alkaline solution at a well-controlled concentration and temperature. It is mainly characterised by the track etching rate (Vt) and the bulk etching rate (Vg). A high ratio Vt/Vg is needed to obtain an homogeneous membrane filter with cylindrical pores.
Pore size is defined by the etching conditions while pore density is defined by the beaming parameters. Pore size and pore density can be therefore independently
State of the art
State-of-the-art track-etching technology can be applied to polyimide (it4ip exclusivity), polyester and polycarbonate. Learn more about the specific features of our membranes.
Applications
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Track-Etched Polymer Membrane Filters for Filtration of Fluids (Gas and Liquids) - Water and Wastewater - Water Filtration and Separation
Clarification of gas and liquids (air, water, …). Blood filtration and analysis.
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Track-Etched Polymer Membrane Filters for Support for Cell Cultivation - Medical / Health Care
In vitro model of the human intestinal epithelial barrier. Improved cultivation of polarized animal cells. Cell culture inserts and multiwell plates.
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Track-Etched Polymer Membrane Filters for Monitoring of Liquid and Gas Diffusion - Monitoring and Testing
Controlled drug delivery. Biochemical sensors. Glucose sensors.
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Track-Etched Polymer Membrane Filters for Templating - Manufacturing, Other
Synthesis of nano- and of micro-sized objects. Applications in batteries, catalysts, microfluidics.
Downloads related to this product
Videos related to this product
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(EN) it4ip - Ion track technology for innovative products - Video
At it4ip, we are a world leader in track-etching technology. This technology enables us to produce micro- and nano-porous polymer filters with multiple and varied applications, such as asbestos fibre detection, blood filtration, cancer cell scanning or the synthesis of micro and nano-objects.
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(FR) it4ip : Ion track technology for innovative products - Video
At it4ip, we are a world leader in track-etching technology. This technology enables us to produce micro- and nano-porous polymer filters with multiple and varied applications, such as asbestos fibre detection, blood filtration, cancer cell scanning or the synthesis of micro and nano-objects.
-
(CN) it4ip : Ion track technology for innovative product - Video
At it4ip, we are a world leader in track-etching technology. This technology enables us to produce micro- and nano-porous polymer filters with multiple and varied applications, such as asbestos fibre detection, blood filtration, cancer cell scanning or the synthesis of micro and nano-objects. Track-etching technology involves irradiating thin polymer films with energetic particles, leading to the formation of latent traces which are then converted into
-
(ES) it4ip : Ion track technology for innovative products - Video
At it4ip, we are a world leader in track-etching technology. This technology enables us to produce micro- and nano-porous polymer filters with multiple and varied applications, such as asbestos fibre detection, blood filtration, cancer cell scanning or the synthesis of micro and nano-objects. Track-etching technology involves irradiating thin polymer films with energetic particles, leading to the formation of latent traces which are then converted into
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