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Solid Phase Extraction (SPE) Disks

 

 

Solid phase extraction (SPE) disks are used commonly in large-volume sample preparation. These disks resemble the membranes used for filtration, but differ in that sorbent particles are embedded in an expanded PTFE network or fiberglass matrix. Solid phase extraction (SPE) disks are flat (usually 1-mm or less in thickness) with diameters ranging from 4 to 96 mm. Generally, the packing material comprises 60 to 90% of the total membrane weight. The small length-to-diameter ratio of and SPE disk enables higher flow rates and faster extractions than can be achieved with cartridges. For example, 1 liter of relatively clean water can pass through a 45-mm SPE disk in approximately 20 minutes, but may require one to two hours when using a 15 mm x 18 mm cartridge bed.


Products & Services
Solid phase extraction (SPE) cartridges and discs are used to clean up a sample before using a chromatographic or other analytical method to quantify the amount of analyte(s) in the sample. Search by Specification | Learn more about Solid Phase Extraction Cartridges and Discs
Data storage systems are used to store, protect and manage computer data. Many types of disk drives and tape drives are available. Search by Specification | Learn more about Data Storage Systems
Gas filtration elements are designed to remove particulates from a gaseous process stream. They are used in natural gas processing systems and gas extraction applications. Search by Specification | Learn more about Gas Filtration Elements
Optical choppers are mechanical or electronic devices that pass and then interrupt a beam of light for a known brief interval.  Optical shutters are used to control the amount of time that a light sensitive material is exposed to radiation.  Learn more about Optical Choppers and Optical Shutters
Hard drives are integral, non-volatile, electronic data storage units inside computers. Traditionally, hard drives were hard-wired into computers. Removeable hard disks and drives are also available. Search by Specification | Learn more about Hard Drives

Product Announcements
Varian, Inc. - Bond Elut Plexa PCX for solid phase extraction
New Bond Elut Plexa PCX for solid phase extraction delivers: • Polymeric strong cation exchange functionality • Single method for basic compounds • High and consistent flow... (read more)
Pentair Industrial - Teflex™ Absolute* PTFE Membrane Filter Cartridges
Teflex™ PTFE Membrane Cartridges are available for general purpose filtration and for the specialized needs of the food and beverage, electronics and high-purity chemical industries. (read more)
OK International, Inc. - BVX-200 Series Fume Extraction Systems
Two Station Design for Dynamic Fume Extraction - The BVX-200 Series Fume Extraction Systems are revolutionary two-arm units that combine powerful fan performance with efficient filtration, quiet... (read more)
Mar Cor Purification -  Pleated Cartridge Filters - Polypropylene
Mar Cor Purification FiberFlo® "PM" polypropylene cartridges are absolute rated cartridge filters. Made of polypropylene membrane, the filters have an increased surface area with excellent flow rates... (read more)
Sterlitech Corporation - Small Filter Devices from Sterlitech
For your disposable filtration needs, we offer a large selection of membranes encapsulated in holders. Select from cellulose acetate, nylon, polyethersulfone, polypropylene, PTFE (Teflon), and PVDF. (read more)
KNF Neuberger, Inc. - LABOPORT® Filtration Pump Series
This inexpensive line of diaphragm vacuum pumps are designed by KNF to provide effective vacuum for a variety of filtration jobs including bottle top and manifold filtration, also vacuum degassing and... (read more)

Topics of Interest
4 OPTIMISATION OF CHROMATOGRAPHIC METHODS FOR TARGETED ANALYSIS A number of approaches can be taken to enhance chromatographic techniques so as to maintain the advantages of targeted analysis to... (Read More)
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Item 1 GPEC 2004: Plastics - Helping Grow A Greener Environment. Proceedings of a conference held Detroit, Mi., 18th 19th Feb. 2004. Brookfield, Ct., SPE, 2004, Paper 27, pp. 6, CD-ROM, 012... (Read More)