Abluo syringe filters are used for rapid filtration of aqueous and organic solutions before injection into HPLC, GC or GPC columns. They are made from high quality materials like cellulose acetate, nitrocellulose, nylon PE, PES, PTFE, PVDF, regenerated cellulose which leaves no trace of contaminants. The housing is made of acrylic ultrasonically welded together. An improved flow channel design leaves a ultra-low volume of liquid retained and greater effective filtration area. They are commonly used in sterile filtration, analytical sample prep, uHPLC, Cell culture, protein chemistry, IC Chromatography. They are available from Arasains in sizes 13 and 33mm with membrane from 0.2 microns to 5 microns in sterile and non-sterile versions.

A multilayered syringe filter, Abluo supreme syringe filters is available. The filters are grades and is an excellent solution for sample with high particulate content. It is very useful for sample larger than 10 ml.

Disposable syringe filters are also available.

Vent filters are used for sterile venting of filter vessels and carboys or venting autoclaves. They are also used for low volume filtration of non-aqueous fluids or in line sterilization and particulate removal from air and gases. Arasains Indonesia supplies GVS vent filters with connectors 6-12 mm and are individually packed sterile or non- sterile. Membrane available are PTFE in polypropylene housing with pore sizes of 0.2 and 0.45 µm.

Centrifuge Filters

Centrifuge filters are devices with filters fitted inside the vial to filter out sample particles during centrifugation process. They are often used for small scale laboratory separations such as protein or nucleic acid desalting and concentration. The filtration action depends on the centrifugal force to drive the liquid through the filter. Increasing the centrifuge speed increases the G force and thus the pressure across the membrane. Arasains Indonesia supplies Centrex centrifuge filters in various housing and filter materials. Contact the friendly Arasains sales representative for information on compatibility of housing and filter materials.

GVS Cellulose acetate is a supported hydrophilic membrane that has a low binding affinity for protein. It is recommended for use where you need maximal recovery of proteins. It is also good for biological and clinical analysis, sterility tests and scintillation measurements and commonly used for aqueous or alcoholic media. They are solvent and heat resistant up to 135°C. Arasains Indonesia supplies GVS Acetate plus cellulose acetate membranes. Contact the friendly Arasains sales representative for information on compatibility of housing and filter materials. The exceptional dimensional strength and low binding characteristics of GVS CA Filtration Membranes provides higher throughputs than competitive offerings and reduces the amount of filter changes needed during proteinaceous solution filtering. Its uniform pore size and consistent flow rates ensure reliable performance.

Features and Benefits:

• Superior strength: Can withstand aggressive handling or be used with automated equipment without breaking or tearing
• Low extractables: Ensures tests will be clean with consistent results
• Hydrophilic: Wets out rapidly
• A Lot-to-lot consistency: Quality checks ensure consistent flow and diffusion rates for dependable results every time
• Non-lysing of cells: Prevents contamination of critical solutions
• Can be autoclaved or steam sterilized

Mixed cellulose ester membranes consist of cellulose acetate and cellulose nitrate fibers. It is an unsupported hydrophilic membrane and has a rapid flow rate making it good for diagnostic kit membrane applications. Typical applications include general filtration sterility testing, gravimetric analysis with ashing, microbiological and particulate analysis. GVS MCE membranes gives a residue of less than 0.045% of their initial weight. GVS membrane consistent microporous structure gives it outstanding particulate control and performance. The membrane are hydrophilic with a non-cytotoxic wetting agent and they are autoclavable at 121°C for 20 min. Sterilized products have a lifetime of 24 months from sterilization date. Pore sizes are available from 0.1 to 8 µm.

Features and Benefits:

• High flow rate: fast filtration rates
• Uniform pore structure: consistent flow and diffusion rates
• Lot-to-lot consistency
• Low protein binding of approx. 160 µg/cm2 (depending on pore size)
• Residue of less than 0.045% of initial weight
  

PTFE sep membranes are made of a polytetrafluoroethylene membrane laminated onto a polypropylene support for improved durability and strength. Besides superior strength they have broad chemical compatibility and as such are used routinely for corrosive and aggressive chemicals. PTFE powder in a fine powder format is melted and expanded into a 3D web like structure with billions of microscopic pores. PTFE is inherently hydrophobic (water resistant) and its non-stick nature allows easy removal of captured particles. Air can easily pass through such a membrane capturing up to 0.1 micron particles. These membranes provide users with a consistent, temperature and chemical compatible barrier to microbes and particulate matter. These membranes can be made hydrophilic by wetting with methanol. They are autoclavable up to 130°C. Pore sizes range from 0.22 to 1 µm.

Features & Benefits:

• Naturally hydrophobic
• Compatible with strong acids and aggressive solutions
• Improved durability and handling
• Autoclavable
  

GVS Hydrophilic Polyvinylidene Difluoride (Hydrophilic PVDF) Filtration Membrane is a supported, hydrophilic membrane that exhibits broad chemical compatibility and low protein binding. Thus, it is used for a large variety of biomedical applications. It is composed of PVDF membrane internally supported by an inert polyester web. The support gives the resulting membrane dimensional stability. This provides higher throughputs than competitor offerings and reduces the amount of filter changes needed during filtration. It is ideal for use in filtration applications of biological solutions. This hydrophilic membrane has a great thermal stability with maximum operating temperature of 175°F and it is autoclavable.

Features & Benefits:

• Superior strength to withstand aggressive handling or use with automated equipment without breaking or tearing
• Low protein binding minimizes retention of proteins in solution
• Low extractables ensure tests will be clean with consistent results
• Lot-to-lot consistency ensures consistent flow and diffusion rates for dependable results every time
  

GVS Polycarbonate Track Etched (PCTE) Membrane is made from a thin polycarbonate film with precisely defined pores. It is ideally suited for use in cellular-based filtration assays as well as filtration applications where high purity is required. The membrane is produced through a two-step, proprietary manufacturing process that employs high quality standards. In the first step, polycarbonate film is exposed to ion particles that pass through it. As the ions pass through the film, they create “tracks” where the polymer is damaged. The beamed film is then exposed to a chemical that etches out the tracks creating precise, cylindrical pores. Pore density is controlled by the number of tracks per unit area, and pore size is controlled by varying the temperature, strength and time of exposure to the etching solution. This unique process allows for increased control over pore size and density to ensure the physical properties of each membrane precisely fit your specifications. The resulting membrane is a thin, translucent polycarbonate film with a smooth, flat surface. All particles larger than the pore size are captured on its surface.

GVS offers a unique solution for Legionella analysis following the new standard UNI EN ISO 11731. Our sterile gridded membranes are suitable for this test and give you the best performances. GVS offers the PCTE Membrane for AOX use (adsorbable organic halogens) with exceptionally low protein-binding/ extractable levels and precisely defined pores. These AOX -certified polycarbonate (PCTE) membranes are ideally suited for the detection of man-made pollution in groundwater and wastewater (organic halide adsorption determination). Pore sizes range from 0.05 to 20 µm. For choices of pore sizes and flow rates, contact the friendly Arasains sales representative.

To optimize the suitability of PCTE, we offer a variety of products with unique characteristics:

• PVP (polyvinylpyrolidone)-treated for a hydrophilic membrane
• AOX-certified for applications requiring extremely low extractables
• A Black-dyed membrane for staining applications
• PVP-free for a hydrophobic membrane

Features and benefits:

• Absolute pore size and density allows for precise size separation
• Direct thickness and pore size measurements provide accurate characteristics
• Smooth, thin, glass-like surface is suitable for microscopy and cellular applications
• Superior strength allows for aggressive handling
• Low protein binding ensures clean results
• Resists chemical staining to ease microscopic visualization
• Passes USP VI Class toxicity testing for use

Typical Applications:

• General filtration
• Legionella test (UNI EN ISO 11731_2017)
• Removal of red blood cells from plasma
• Flow control of reagents through assays
• Precise filtration and prefiltration
• Fuel testing
• Cytology
• Microscopy