Interstate Specialty Products die cuts membrane filters for medtech, scientific, electronics, and industrial applications.
Membrane Filtration Systems
Pressure driven membrane filtration systems are the most common, and include four main types:
- Microfiltration uses membrane filter materials with pore sizes ranging between 01-10 microns. Microfilters are useful for capturing large molecules like suspended solids and microorganisms.
- Ultrafiltration systems use membranes with pore sizes ranging between 0.01–0.1 microns to capture smaller particles such as bacteria, proteins, fats, and polysaccharides.
- Nanofiltration membranes have pore sizes around 0.001 microns (about 1–10 nanometers). Nanofiltration captures compounds with large ions like certain minerals, chemicals, and most organic substances.
- Reverse osmosis systems use membrane materials with pore sizes similar to nanofiltration, but utilize multiple layers, high pressure, and the principles of diffusion to remove particles larger than 0.1 nanometers.
Membrane Filter Materials and Applications
Filtration membranes may be composed of nylon, polypropylene, cellulose, nitrocellulose, glass fiber, and PTFE.
- Nylon filtration membranes are chemically compatible with a wide range of solvents.
- Polypropylene filtration membranes are used with more aggressive solvents. Because these membrane filters are highly adsorbent, they’re also a good choice for high performance liquid chromatography (HPLC) applications with low detection levels.
- Cellulose acetate filtration membranes are used in diagnostic cytology and the filtration of enzyme solutions.
- Nitrocellulose filtration membranes are used in for laboratory applications such as nucleic acid and protein detection.
- Glass fiber membrane filters are made of pure borosilicate and used to measure suspended solids. Some borosilicate fibers feature fine porosity and can tolerate high temperatures.
- PTFE membrane filters can have hydrophobic or hydrophilic characteristics. Hydrophobic PTFE membrane filters are used to sterilize gases and aggressive chemicals. Hydrophilic PTFE membrane filters are recommended for HPLC.
How Membrane Filters Are Manufactured
Interstate Specialty Products die cuts filtration membranes from sheets or rolls of sourced materials based on the specifications above. We can also work with customer supplied materials and convert your purchased materials into precise components. Cleanroom die cutting is recommended for sensitive medtech and pharmaceutical applications.
To learn how our membrane manufacturing capabilities meet your requirements, contact us on-line or call (800) 984-1811.
*Properties and applications shown throughout this website are typical. Your specific application should not be undertaken without independent study and evaluation for suitability.
Die Cutting Tolerances and Tooling Considerations
Tight tolerances are achievable with precision die cutting, but product designers may need to balance tolerances with costs.
Gaskets Made in the USA
For over 60 years, Interstate has been producing die cut parts at our manufacturing facility in Sutton, Massachusetts. View the die cut products section below for more information, and please contact us with your questions.