What's New
Screener Allows Fast Removal of Components
The Centri-Sifter MO-SS centrifugal screener has a hinged end cover and a three-bearing cantilevered shaft to ease internal component removal. External roller bearings are located at the motor end of the shaft and on a hinged cover at the discharge end for maximum support and vibration-free operation. When the end cover is opened, the shaft becomes a cantilever supported by a third externally mounted roller bearing located between the motor-end bearing and the material feed point. This design allows internal components to slide freely from the opposite shaft end for a thorough washdown. It uses rotating helical paddles to propel gravity-fed materials against the chamber’s internal screen, and the resulting centrifugal force pushes materials through apertures, where they are separated into discharge housing for inspection or ejected through a spout as trash. The screener is constructed of stainless steel that is finished to 3-A Sanitary Standards (3-A), U.S. Food and Drug Admin-istration (FDA) regulations, Baking Industry Sanitation Standards Committee (BISSC) guidelines, and other standards imposed on food, dairy and pharmaceutical applications. It is suitable for general chemical applications that require frequent screen changes and inspections or for applications that involve multiple materials where cross-contamination may be a concern.
Appeared In Issue: October 2008
Kason Corp.
www.kason.com
Magnetic Nickel Beads Purify Recombinant Proteins
PureProteome magnetic nickel beads form a powerful separation matrix with high binding capacity that can be used for the fast and easy purification of polyhistidine-tagged recombinant proteins. A patented process creates high-affinity beads, which offer higher purity while yielding similar amounts of protein compared to other less-pure magnetic beads. These beads bind recombinant protein even in the presence of ethylenediaminetetraacetic acid (EDTA), which is a metal ion chelator.
Appeared In Issue: October 2008
Millipore Corp.
www.millipore.com
Plastic Strainers Handle Corrosive Materials
Constructed of polyvinylidene fluoride (PVDF), all-plastic Fluor-O-Shield basket strainers cost less than units that are lined with steel or other metals, and outperform ordinary plastic strainers made from polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene and acetal materials. Unlike previously available plastic strainers, these can handle corrosive materials, including halogens and many acids, and they can operate at temperatures up to 300°F. They remove suspended or waste solids from corrosive or high-purity fluid streams to prevent damage to sensitive downstream equipment, such as pumps, valves, instruments and spray nozzles. The strainers are impervious to ultraviolet (UV) radiation, are FDA-compliant, and have high rigidity and resistance to creep under mechanical loads. They are suitable for the chemical, pharmaceutical, semiconductor, pulp and paper, food and beverage, water treatment and similar process industries
Appeared In Issue: October 2008
Micromold Products, Inc.
www.micromold.com
Membranes are Stable in Acids and Bases
SelRO nanofiltration membranes provide chemical and thermal stability to satisfy requirements of processes involving high or low pH, high temperature, or organic solvent media. Other nanofiltration membranes are limited to aqueous applications within a pH range of 2 to 11. These restrictions are insufficient for pharmaceutical and other fine-chemical applications where aggressive cleaning measures are necessary. SelRO membranes are stable in both acids and bases, and can be operated over the full pH range of 0–14.
Appeared In Issue: October 2008
Koch Membrane Systems
www.kochmembrane.com
Microporous Membrane can be Die-Cut to Order
The Mupor polytetrafluoroethylene (PTFE) microporous membrane features a three-dimensional pore structure that helps to keep the pores from collapsing under pressure, and comes in a wide range of pore sizes, from 0.5 mm to 50 mm. It is supplied on rolls, with or without an adhesive backing, and can be ordered in thicknesses from 50 mm to 3,000 mm and in widths up to 330 mm. The membrane has a tensile strength up to 20 N/mm2 and is U.S. Pharmacopeia-approved (USP-23) and non-cytotoxic. Since the membrane is chemically inert and thermally stable, it can be sterilized with steam and can be die-cut to specifications for use in a wide range of precise filtration and venting applications, such as in frits for liquid and gas, and in vents for caps and closures.
Appeared In Issue: October 2008
Interstate Specialty Products, Inc.
www.interstatesp.com