Membrane filters

Standard Grade Regenerated Cellulose (RC) is a clear, flexible and sturdy dialysis tubing. This tubing is ideal for a broad range of applications in which there is a significant size difference between the MW species being separated, including sample preparartion, desalting, buffer exchange, pH change, protein purification. Offering a good chemical compatibility, Standard Grade RC can be used with dilute strong acids and bases, concentrated weak acids and bases, most alcohols and some mild or dilute organics, including DMSO. Standard RC can tolerate pH 2 to 12 and temperatures 4 to 121 °C
RC dialysis tubing supplied pre-wetted with glycerol removed for convenience in 0.05 % sodium azide solution. Simply rinse away the preservative solution with DI water, load the sample and dialyze.

SEPARA integrates in one single device auto-sampler vial, filtration membrane, plunger, and cap/septa. The single step filtering process is efficient and saves time. Fast and simple to use. Reducing sample loss. After filtration the sample is ready to use in most standard autosampler. The pre-slit cap ensures easy and clean transfer of sample. 5 different septa material, PP vial with Ø 12 x 33 mm, Filtering capacity 0.48 ml, dead volume <30 µl, maximum operating temperature 50 °C

Filter handling for MF method testing has been revolutionized by the EZ-Pak membranes and dispensers. They combine the advantages of ready-to-use, sterile and individually packaged membranes.

Durapore® PVDF membranes are characterized by high throughput and high flow rate. To maximize recovery and minimize interaction with your sample, the membrane has very low protein binding.

Features & Benefits:

• Can be sterilized by ethylene oxide and gamma irradiation
• Available in different pore sizes

MF-Millipore™ Membranes have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods

MF-Millipore™ Membranes have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods

In contrast to nitrocellulose, Immobilon membranes have a number of advantages. An optimized coloring capacity, a broad solvent compatibility and a lower background make the membranes your solution. Immobilon membranes do not rupture or curl and can be cut without breaking. Reprobing is also possible many times. The Immobilon NC membrane without surfactant, is perfect for not disturbing cell wall integrity during cell wall growth.

Features & Benefits

• Mixed cellulose matrix
• Recommended for colony lifts

MF-Millipore™ Membranes have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods

Solutions of any macromolecules, simple and efficient, desalt and concentrate. Suitable for any centrifuge holding 1.5 ml tubes.

Features & Benefits:

• Even with diluted solutions the recovery is more than 95%.
• Reverse spin to maximize recovery even in the smallest sample
• Storage of filtrate or concentrated sample, very easy in standard microcentrifuge tubes
• concentration factor up to 100 x

Membrane filters Cyclopore™ polycarbonate are true pore size microporous membranes featuring the sharp cut-off and reproducible microfiltration characteristics of track-etched membrane filters.

• Low affinity for stains improves visibility under a microscope
• Low protein binding minimizes sample loss of proteinaceous samples
• Narrow pore size distribution and high pore density support rapid surface capture of analyte
• Negligible absorption and adsorption of filtrate; nonhygroscopic
• No particle shedding enables clean filtrate
• Biologically inert
• Filters are autoclavable for 30 min at 121 °C

Hydrophobic PTFE membrane for applications involving organic solvents and chemically aggressive solutions.

• Maximum operating pressure of 4.1 bar forward and 3.0 bar reverse
• 1 µm capsules incorporate a PP prefilter
• Autoclavable up to 132 °C maximum
• Connectors: stepped barb (SB) and female national pipe thread (FNPT)

Durapore® PVDF membranes offer high flow rates and throughput, low extraction, agents, and broad chemical compatibility.

Features & Benefits:

• Can be sterilized by ethylene oxide and gamma irridation
• Avialable in different pore size
• Very low protein binding to minimize interaction with your sample and maximize recovery

Polycap TC filtration capsules feature dual layer polyethersulfone (PES) membranes and provide efficient filtration for aqueous solutions.

• 100% integrity-tested during manufacturing
• Polypropylene housing thermally fused to eliminate surfactants and mold releasing agents that could affect analysis
• Manufactured according to ISO9001:2008 QMS standards
• Available in sterile versions with a filling bell option
• PES membranes protein adsorption characteristics: HAS 0.4 µg/cm²; Insulin 2.0 µg/cm²; gammaglobulin 1.5 µg/cm²
• Connectors: stepped barb (SB)

Fittings with integrated ferrule for SafetyCaps and SafetyWasteCaps.
Use the blind plugs to tighten connectors which are temporarily inactive or not in use.

Suitable for analytical and gravimetric analyses, as well as a pre-filter.

• Hydrophilic
• Air / Gas Filtration
• Liquid Filtration
• Non-sterile

Recommended for clarification and sterilisation of aqueous solutions, microbiological analysis and particle counts

• Membranes with grid lines are ideal for microbiological analysis (bacterial counts) of water, pharmaceuticals, beverages, cosmetics, etc. for the measurement of coliform bacteria and other germs
• Gridded membranes (black grid on white membrane) for counts of colonies as a standard method of quantification, black grid, clearly defined sections (3.1 x 3.1 mm grid)
• Special ink, non-toxic and totally free from bacterial growth inhibitors, is used for imprinting
• Sterilised membranes (packaged in individual blisters)

Recommended for clarification and sterilisation of aqueous solutions, microbiological analysis and particle counts.

• Qualified for aqueous solutions (pH 4-8), hydrocarbons and some dilute solvents
• High non-specific adsorption: 160 µg/cm² for gamma globulin and pore size 0.2 µm (decreases with increasing pore size)
• High mechanical stability, ideal for gravimetrical measurements
• Maximum temperature 180 °C

S-Pak filters are manufactured from mixed cellulose esters and have been specially optimized for MF methods. Microbiological analysis of water or other liquids.

Recommended for aqueous samples, biological applications and protein filtration.

• Compatible to aqueous solutions with pH 4-8, most alcohols, hydrocarbons and oils
• Filtration of aqueous solutions for biological and clinical analysis
• Sterilisation of biological solutions (CA-membranes with a pore size of 0.2 µm are specially recommended when the recovery of proteins is critical)
• High thermal stability: 180 °C
• Very low nonspecific adsorption

Made entirely of PTFE (polytetrafluorethylene), reinforced by Polypropylene net.

• Permanently hydrophobic
• Allowing passage of air even at low differential pressure
• Resistant to almost all chemicals, very strong acids, cryoliquids, alkalis, aggressive organic solvents
• Must be pre-wetted with an organic solvent, such as ethanol, methanol or isopropanol, before filtration of aqueous samples
• Max. Temperature 145 °C

Circular filter for ultrafiltration for sample concentration in stirring cells. The PES diaphragm offers a high flow rate.

Recommended for clarification and sterilisation of aqueous solutions, microbiological analysis and particle counts

• Qualified for aqueous solutions (pH 4-8), hydrocarbons and some dilute solvents
• High non-specific adsorption: 160 µg/cm² for gamma-Globulin
• Maximum temperature 130 °C

MF-Millipore™ Membranes have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods

MF-Millipore™ Membranes have a biologically inert mixture of cellulose acetate and cellulose nitrate. The MF-Millipore™ filters without Triton® surfactant have a lower water extractable content compared to the standard MF-Millipore™ filters and contain a minimal amount of wetting agent.

Features & Benefits:

• Manifold filter for biological and environmental monitoring applications
• available in various pore sizes
• white or black coloured
• Freely selectable whether with or without grid surface
• Compatible with ethylene oxide, gamma irradiation and autoclave sterilization methods