Discovery DSC - WCX SPE Tube, lit wt. 100 mg, volume 1 mL, lot de 108

Code: 52739-u D2-231

Non disponible en dehors du Royaume-Uni et de l'Irlande

General description

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


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Non disponible en dehors du Royaume-Uni et de l'Irlande

General description

Retention Mechanism: Cation exchangeSample 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

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

application(s)food and beverages
capacity0.15 meq/g total capacity
compositionbed wt., 100 mg
materialpolypropylene tube
matrix active groupcarboxypropyl bonding
matrixSilica gel base material (irregularly shaped, acid washed)
packagingpk of 108
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
volume1 mL
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