Discovery DSC-SCX SPE Tube, bed wt. 5 g, volume 20 mL, pk of 20

Code: 52691-u D2-231

Not available outside of the UK & Ireland.

General description

Retention Mechanism: Cation exchangeSample Matrix Compatibility: Organic or aqueous solutions A polymerically bonded, be...


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Not available outside of the UK & Ireland.

General description

Retention Mechanism: Cation exchangeSample Matrix Compatibility: Organic or aqueous solutions A polymerically bonded, benzene sulfonic acid functional group, pKa (﹤ 1.0) Counter ion is H+ Silica support allows for use with very organic solvents (no shrinking/swelling) Excellent capacity (0.8 meq/g) for cleaning up solution phase combinatorial chemistry reactions (removing target molecules from reaction by-products and excess reagents) The presence of the benzene ring offers some mixed-mode capabilities (hydrophobic interactions) that should be considered when extracting cations from aqueous matrices

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

application(s)food and beverages
capacity0.8 meq/g total capacity
compositionbed wt., 5 g
materialpolypropylene tube
matrix active groupsulfonic acid bonding
matrixSilica gel base material (irregularly shaped, acid washed)
packagingpk of 20
particle size50 µm
pore size0.9 mL/g pore volume, 70 Å pore diameter
Quality Level100
separation techniqueion exchange
surface area480 m2/g
technique(s)solid phase extraction (SPE): suitable
volume20 mL
This product has met the following criteria: