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Filter bag has triple the surface area
Crossflow system for biological separations A/G Technology Corp. has introduced a new compact crossflow filtration system for rapid laboratory concentration and/or diafiltration of critical biological solutions. The new Midjet system is designed to facilitate the use of A/G’s existing Midgee crossflow filters, and incorporates a miniature peristaltic pump with interchange-able saddles to accept size 14 and 16 tubing. The system also includes reservoirs for retentate, diafiltrate and permeate, a precision backpressure control valve, and a platform for mounting the cartridge pump fitted with recesses to accommodate the reservoirs. A/G Technology claim that this compact system configuration allows concentration to volumes as small as 2 ml. In addition, an advanced Mid-
jet system with pressure transducers plus digital panel meter with two pressure readouts is also available. According to A/G Technology, the MidGee crossflow filters used in the system minimize polarization due to the cross flow velocity generated by a recirculation pump. The manufacturer also claims that by incorporating precise control of recirculation rate and pressure, these disposable cartridges assure high product recoveries with minimal shear denaturation. The Midgee filters have convenient luer lock fittings which provide quick connection to flexible tubing and allow attachment to a syringe for easy removal of concentrated solution. The MidGee cartridges are available in a wide range of ultrafiltration and
Ultrafilter offers ultrapac dryer system Moisture in compressed air systems binds dirt particles and can cause corrosion, machine downtime, wear and repair costs, higher energy consumption and ultimately lower product quality. In response to these problems, Ultrafilter have introduced a new line of ultrapac dryer systems which have been designed to provide dry, clean air for industrial compressed air systems. Ultrafilter reports that the dryers offer pressure
dewpoints of +35”F, -4”F, -40°F and -100°F to meet a variety of needs. The systems are complete with electronic solid state controls, high efficiency preand post-filtration and are housed in a powder coat-ed steel cabinet. In addition, the US-built ultrapac systems meet all IS0 standards. Ultrafilter Inc., 3560 Engineering Drive, Norcross, GA 30092, USA. Tel: + 1 770 448 3363; -I- 1 770 448 3854.
microfiltration pore sizes for a variety of laboratory applications including recovery of virus, monoclonal antibodies and growth factors from tissue culture supernatants, concentration and buffer exchange of column chromatrography fractions, latex and magnetic particle purification/ concentration, cell washing, colloidal suspension concentration, continuous buffer exchange, lysate clarification, protein concentration, suspended solids removal and virus concentration/removal. For further information contact: AIG Technology Corporation, 101 Hampton Avenue, Needham, MA 02194-2628 USA. Tel: + 1 617 449-774; fax: + 1 617 449 5786. e-mail: [email protected]; Internet http:ll www.agtech.com
Filter bag has triple the surface area Rosedale Products Inc. of Michigan, has recently launched the new Surfacemax filter bag which is designed for handling heavy dirt load applications. Rosedale claim that this filter bag offers three times the surface area of similar standard sized bags, increasing the amount of contaminant held, reducing the amount of clogging and extending the time between change-out. According to the manufacturer, the Surfamax exhibits the benefits associated with bags, combined with the capacity of cartridges. The filter bag is designed using two parts, the bag and the support. The bag is available in either polyester or polypropylene microfibre both with identical effiencies. The support is made from coarse mesh plastic screen, and has a retaining ring sewn into its opening with a heavy-duty handle for quick and easy disposal. Rosedale report that the bags are available in a standard unit that fits a size 2 bag housing, with micron ratings ranging from 1 to 110 urn. Rosedale Products, Inc. PO Box 1085, Ann Arbor, MI 48106, USA. Tel: + 1313 665 8201; fax: + 1 313 665 2214. Internet: http:llwww.filterzone.com.
jet system with pressure transducers plus digital panel meter with two pressure readouts is also available. According to A/G Technology, the MidGee crossflow filters used in the system minimize polarization due to the cross flow velocity generated by a recirculation pump. The manufacturer also claims that by incorporating precise control of recirculation rate and pressure, these disposable cartridges assure high product recoveries with minimal shear denaturation. The Midgee filters have convenient luer lock fittings which provide quick connection to flexible tubing and allow attachment to a syringe for easy removal of concentrated solution. The MidGee cartridges are available in a wide range of ultrafiltration and
Ultrafilter offers ultrapac dryer system Moisture in compressed air systems binds dirt particles and can cause corrosion, machine downtime, wear and repair costs, higher energy consumption and ultimately lower product quality. In response to these problems, Ultrafilter have introduced a new line of ultrapac dryer systems which have been designed to provide dry, clean air for industrial compressed air systems. Ultrafilter reports that the dryers offer pressure
dewpoints of +35”F, -4”F, -40°F and -100°F to meet a variety of needs. The systems are complete with electronic solid state controls, high efficiency preand post-filtration and are housed in a powder coat-ed steel cabinet. In addition, the US-built ultrapac systems meet all IS0 standards. Ultrafilter Inc., 3560 Engineering Drive, Norcross, GA 30092, USA. Tel: + 1 770 448 3363; -I- 1 770 448 3854.
microfiltration pore sizes for a variety of laboratory applications including recovery of virus, monoclonal antibodies and growth factors from tissue culture supernatants, concentration and buffer exchange of column chromatrography fractions, latex and magnetic particle purification/ concentration, cell washing, colloidal suspension concentration, continuous buffer exchange, lysate clarification, protein concentration, suspended solids removal and virus concentration/removal. For further information contact: AIG Technology Corporation, 101 Hampton Avenue, Needham, MA 02194-2628 USA. Tel: + 1 617 449-774; fax: + 1 617 449 5786. e-mail: [email protected]; Internet http:ll www.agtech.com
Filter bag has triple the surface area Rosedale Products Inc. of Michigan, has recently launched the new Surfacemax filter bag which is designed for handling heavy dirt load applications. Rosedale claim that this filter bag offers three times the surface area of similar standard sized bags, increasing the amount of contaminant held, reducing the amount of clogging and extending the time between change-out. According to the manufacturer, the Surfamax exhibits the benefits associated with bags, combined with the capacity of cartridges. The filter bag is designed using two parts, the bag and the support. The bag is available in either polyester or polypropylene microfibre both with identical effiencies. The support is made from coarse mesh plastic screen, and has a retaining ring sewn into its opening with a heavy-duty handle for quick and easy disposal. Rosedale report that the bags are available in a standard unit that fits a size 2 bag housing, with micron ratings ranging from 1 to 110 urn. Rosedale Products, Inc. PO Box 1085, Ann Arbor, MI 48106, USA. Tel: + 1313 665 8201; fax: + 1 313 665 2214. Internet: http:llwww.filterzone.com.