Key features of track-etched membane filters
Inherent in properties of raw materials
- High quality raw materials processed by extrusion without using solvent.
- Low extractable, low protein binding, negligible adsorption and absorption, biocompatibility.
- Compatibility with alcohols, solvents, acids and bases.
- Thermal stability :
- Max. working temperature for PC and PET: 140°C (248 °F)
- Max. working temperature for PI: up to 400°C (752°F)
- Smooth and flat surface ideal for the detection and the analysis of particles retained by filtration.
Inherent in track-etching process
-
Precise and uniform pore diameter
The physical mechanism at the base of the pore 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.
-
Wide range of porosity
As the pore density and the pore size are independently controlled during
both steps of the process, the track-etched membrane filter porosity
ranges :
- From less than 0.1 % to more than 20 % (standard configurations)
- To more than 40 % (customized configurations)
Inherent in the beaming step
-
Pore density
- from 103 pores/cm² to 109 pores/cm² for standard products
- customization available for density higher than 109 pores/cm².
-
Pore orientation
Standard configurations
Multi-angle pores
(randomly tilted from -45° to +45°)
90° parallel pores
(all perpendicular to the surface)
Multi-angle pores
(randomly tilted from -45° to +45°)
90° parallel pores
(all perpendicular to the surface)
Customized configurations
Single tilted parallel pores
(+X° parallel pores)
Dual tilted parallel pores
(+X° and -X° parallel pores)
90° parallel buried pores
(one side open pores)
Single tilted parallel pores
(+X° parallel pores)
Dual tilted parallel pores
(+X° and -X° parallel pores)
90° parallel buried pores
(one side open pores)
Inherent in the etching step
-
Pore diameter
- Uniform pore size from 0.01 µm to 30 µm
-
Surface property
- PVP free (hydrophobic)
- PVP treated (hydrophilic)
- Tissue culture treated
- Pore shape
Truly cylindrical pores
Barrel-shaped pores
Truly cylindrical pores
Barrel-shaped pores
Inherent in manufacturing and conversion process
-
Available in roll format:
- roll from 10 mm wide to 500 mm wide
- up to 300 meters long per roll for standard products
- Available in sheet, coupon and disc formats.
| Sheet | Coupon | Discs | |
|---|---|---|---|
| Size & Packaging | Size & Packaging | Diameter & Packaging | Diameter & Packaging |
| 150 mm x 150 mm (30/pack) | 25 mm x 12.5 mm (100/box) | Ø 13 mm (100/box) | Ø 10 mm (100/box) |
| 175 mm x 175 mm (30/pack) | 15 mm x 15 mm (100/box) | Ø 25 mm (100/box) | Ø 10.5 mm (100/box) |
| 200 mm x 200 mm (30/pack) | 20 mm x 15 mm (100/box) | Ø 37 mm (100/box) | Ø 13.1 mm (100/box) |
| 200 mm x 200 mm (50/pack) | 30 mm x 15 mm (100/box) | Ø 47 mm (100/box) | Ø 15 mm (100/box) |
| 200 mm x 250 mm (30/pack) | 42 mm x 19 mm (100/box) | Ø 90 mm (20/pack) | Ø 19 mm (100/box) |
| 220 mm x 300 mm (30/pack) | 20 mm x 20 mm (100/box) | Ø 90 mm (30/pack) | Ø 22 mm (100/box) |
| 250 mm x 300 mm (30/pack) | 24 mm x 24 mm (100/box) | Ø 142 mm (20/pack) | Ø 24.85 mm (100/box) |
| 220 mm x 300 mm (10/pack) | 25 mm x 25 mm (100/box) | Ø 142 mm (30/pack) | Ø 30 mm (100/box) |
| 220 mm x 300 mm (30/pack) | 75 mm x 25 mm (100/box) | Ø 293 mm (20/pack) | Ø 32 mm (100/box) |
| 250 mm x 300 mm (30/pack) | 27 mm x 27 mm (100/box) | Ø 32.35 mm (100/box) | |
| 300 mm x 300 mm (30/pack) | 88 mm x 37 mm (100/box) | Ø 32.8 mm (100/box) | |
| A4 (1/pack) | 93.5 mm x 43 mm (100/box) | Ø 33 mm (100/box) | |
| A4 (5/pack) | 60 mm x 50 mm (100/box) | Ø 34 mm (100/box) | |
| A4 (10/pack) | 60 mm x 60 mm (100/box) | Ø 37.35 mm (100/box) | |
| A4 (30/pack) | 177 mm x 75 mm (100/box) | Ø 50 mm (20/pack) | |
| 120 mm x 80 mm (100/box) | Ø 54 mm (20/pack) | ||
| 100 mm x 100 mm (10/pack) | Ø 67 mm (20/pack) | ||
| 100 mm x 100 mm (25/pack) | Ø 76 mm (20/pack) | ||
| other mm x other mm (other/pack) | Ø 105 mm (20/pack) | ||
| 128 mm (20/pack) | |||
| other sizes and packaging on request | other Ø and packaging on request | ||