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  • 52737-U - Discovery® DSC-WCX SPE Tube

52737-U Supelco

Discovery® DSC-WCX SPE Tube

bed wt. 50 mg, volume 1 mL, pk of 108

  •  NACRES NB.21



Related Categories Analytical/Chromatography, Discovery DSC-WCX SPE Products, Discovery SPE Tubes, Sample Preparation & Purification, Solid Phase Extraction (SPE) More...
Quality Level   100
material   polypropylene tube
composition   bed wt., 50 mg
packaging   pk of 108
volume   1 mL
matrix   Silica gel base material (irregularly shaped, acid washed)
matrix active group   carboxypropyl bonding
particle size   50 μm
pore size   0.9 mL/g pore volume
  70 Å pore diameter
surface area   480 m2/g
capacity   0.15 meq/g total capacity
Featured Industry   Food and Beverages
separation technique   ion exchange


General description

Retention Mechanism: Cation exchange
Sample Matrix Compatibility: Organic or aqueous solutions

• A polymerically bonded, ethylenediamine triacetic acid phase with a pKa of 4.8
• Counter ion is Na+
• Ion exchange capacity is ∼ 0.15 meq/g
• Carries a negative charge at pH 6.8 or above
• A pH of 2.8 or below neutralizes this phase for easier elution of strong cationic analytes that are neutralized only at extreme basic conditions
• Typically used when dealing with very strong cationic (high pKa) compounds that may be irreversibly retained on strong cation exchangers

Legal Information

Discovery is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

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Certificate of Analysis (COA)

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Protocols & Articles


Solid Phase Extraction: Ion Exchange Methodology

In order for electrostatic retention to occur, both analyte and sorbent functional groups must be in their ionized form. This is done through strict pH control of the sample matrix. For basic analyte...
Keywords: Agriculture, Buffers, Herbicides, Ion Exchange, Pharmaceutical, Solid phase extractions

Solid Phase Extraction: Normal Phase Methodology

In order for polar retention to occur between the sorbent and the sample, the analyte must be introduced to the SPE device in a non-polar sample or mobile phase environment. Therefore, typical sample...
Keywords: Cosmetics, Fractionation, Gas chromatography, Separation, Solid phase extractions, Solvents, Sonication

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SPE Cartridges (Tubes) - Phase Selection Guide

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Keywords: Agriculture, Calorimetry, Environmental, Fractionation, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Pesticides, Pharmaceutical, Solid phase extractions

Solid Phase Extraction: Fundamentals and Recent Developments [Webinar]

Solid Phase Extraction (SPE) has become a popular technique for sample preparation due to its convenience, effectiveness, relatively low solvent usage and versatility. The focus of this webinar is on...
Keywords: Sample preparations, Solid phase extractions

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