Membrane Filter

Microlab Membrane Filters with an accurately controlled pore size distribution and higher strength and flexibility, which ensure reproducibility and consistency. Microlab offers a full line of membrane materials and media for all types of liquids, solvents or gases, including PES , MCE, Nylon, PVDF , PTFE , PP, GF, CA , MCE, CN and Mesh. Disc Membrane diameters range from 13 mm to 293 mm (other customized shapes also available). which are manufactured in a ISO 9001 certified facility. Most membranes can be sterilized and individually packaged if required.

Microlab® Mesh Filter is made of PP or Nylon fiber, with large pore sizes than the Micro-filtraiton Membrane. Because of Good Chemical Compatibility, Mesh filters are ideal for removing and recovering different types of large suspended solids from the solutions.

Microlab® Nylon Mesh Filter is made by woven monofilament type PA6(1:1 Weaving Methods), characterized precise mesh opening, percent open area and mesh thickness, with a broad range of solvent. Nylon Mesh Filter with mesh openings ranging from 10 to 180µm, can be fully meet the most stringent requirements of our customers.

Microlab® Polypropylene (PP) Mesh Filters are ideally suited for general clarifying and prefiltration of solvents and contamination analysis. PP mesh filters are made of 100% virgin polypropylene. PP mesh filters also provide broad chemical compatibility.

Microlab nitrocellulose membrane is composed of high-quality 100% pure nitrocellulose membranes. The rolls, sheets, are available in 0.22μm and 0.45μm with high surface area and uniformity. The nitrocellulose membranes have high binding properties for Western blot, dot-blot assays, and other protein or nucleic acid methods. Special formats have been developed for stripping and/or reprobing purposes.

Microlab®  Cellulose Acetate (CA) Filtration Membrane is unsupported, hydrophilic membrane .Composed of pure cellulose acetate, the membrane has dimensional stability and naturally low protein binding. This provides higher throughput than competitor offerings and reduces the amount of filter changes needed during filtration of proteinaceous solutions. It is ideal for use in filtration applications where maximal recovery of protein is critical. In addition,CA membrane combines good chemical resistance ranging from PH4-8, high flow rates and thermal stability, therefore is ideally suitable for pressure filtration devices, like syringe filters, disposable vacuum filter funnels etc.

Microlab®Regenerated cellulose (RC) membrane is made of pure cellulose without adding any wetting agents and reinforced with nonwoven material. RC membrane is a very clean membrane features low extractables and ultra-ow non-specific binding characteristics. Naturally hydrophilic property and wide compatibility makes RC filter suitable for both organic and aqueous media applied in chromatography sample preparation and solvent preparation.In addition,the high-quality microporous structure helps to decrease impact on sample analysis at a minimally level.RC membrane have very low protein binding capability,which is also very good for tissue culture filtration and universal biological sample filtration.

Microlab® polypropylene (PP) microfiber filters is constructed of pure polypropylene microfiber, which belongs to a membrane filter material for depth filtration.Polypropylene membrane is natural hydrophobic, can withstand a variety of organic solvents, has excellent chemical stability and chemical compatibility Polypropylene membrane is tough and durable, not easy to break, non-toxic, and with uniform strength, widely used in lots of industries. 

Microlab®Polyvinylidene Fluoride(PVDF) membrane is a kind of universal film, which is available in Hydrophobic or Hydrophilic Vision( hydrophilic treated), unsupported and PET supported vision to accommodate more industries. 

Hydrophobic PVDF membrane with excellent hydrophobic ability,fast air flow rate and professional general sterile filtration capability,easy for assembling as unnecessary to distinguish the front and back side,can be ideally used as a PVDF venting membrane filter or air filtration/sterilization for medical devices or diagnosis assay.

Hydrophilic PVDF membrane with very low protein binding and high flow rate features, is ideal for clarification, pre-filtration and sterile filtration of fluids such as water, diagnostic reagent, buffer, cell culture medium, ophthalmic solution, blood products/serum,etc, offering efficient bacterial and particulate retention.

Supported PVDF Membrane (PET support layer) with better mechanical strength than Unsupported PVDF membrane. Our PVDF Membrane is widely used because of its outstanding properties including high thermal stability excellent mechanical strength, chemical resistance, which makes it has good resistance to organic solvents, corrosion, oxidation and withstand solutions of pH 2-10.

Microlab® PTFE membrane is manufactured in a unique way where polytetrafluoroethylene (PTFE) is expanded both uniaxially and biaxially. It’s supported by a polypropylene net laminated to the underside to improve handling characteristics. Both hydrophobic and hydrophilic PTFE Membranes are available. 

Hydrophobic PTFE Membrane has good hydrophobility, excellent chemical resistance,
high porosity, excellent air permeability. The membrane is widely used for Air Monitoring and clarifying acids, bases, and solvents, propellants, analyzing hydraulic fluids, isolating RNA and so on.

Hydrophilic PTFE membrane is treated base on Hydrophobic PTFE membrane. It’s design as a Universal membrane for filtering both aqueous solutions and aggressive solvents, even mixture. 

Microlab® mixed cellulose ester (MCE) membrane filters are composed of cellulose acetate and cellulose nitrate. lt's one of the most widely used membranes in analytical and research applications. MCE membrane filter is characterized by smoother and more uniform surface than pure nitrocellulose（NC）Membrane filter. Also, the color contrast provided by the filter surface 
facilitates particle detection and minimizes eye fatigue. Microlab® also supplies sterile gridded Membrane Filters with or without adsorbent pads.

Microlab® PES Membrane（Polyethersulfone）is made of a modified polyethersulfone polymer cast.The optimized asymmetric structure, enhanced hydrophilicity and high porosity provides extraordinary high flow rate and contaminants retention capacity. The product uniformity results in consistent filtration performance. Its high mechanical strength supports most kinds of assembling technologies.  It is designed to remove particulates during general filtration, and its low protein and drug binding characteristics make it ideally suited for life science application.

Microlab® Cellulose Nitrate membrane filters are indicated for many general laboratory applications where a membrane with a high non-specific adsorption is suitable. They are hydrophilic, have high flow rates thanks to their symmetric structure and are compatible with aqueous solutions (pH 4 to 8), hydrocarbons and several other organic solvents. The cellulose nitrate membranes are available in different pore sizes from 0.2 μm to 8 μm.

Microlab® Nylon membrane filter is a supported, naturally hydrophilic membrane designed to wet out evenly and retain its superior strength during use in general filtration or medical assays, eliminating the need for wetting agents that could be extracted when filtering aqueous solutions. Nylon membrane filters are flexible, durable and tear resistant, and can be autoclaved at 135º C.High-quality nylon membrane filters are suitable for filtering aqueous solutions and most organic solvents. Nylon membrane filters are suitable for a wide range of biological preparations and can be used where other membranes are unsuitable or difficult to use.