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Discovery DSC-NH2 SPE Tube, bed wt. 500 mg, volume 3 mL, pk of 54

Code: 52637-U D2-231

General description

Retention Mechanism: Normal phase or Anion-exchangeSample Matrix Compatibility: Organic or aqueous solutions• Polymerica...

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General description

Retention Mechanism: Normal phase or Anion-exchangeSample Matrix Compatibility: Organic or aqueous solutions• Polymerically bonded, aminopropyl phase that is very polar in nature (hydrogen bonding) allowing for both normal phase and ion exchange applications• A weak anion exchanger with a pKa of 9.8. At pH 7.8 or below, the functional groups are positively charged• Ion exchange capacity is ~ 0.43 meq/g.• Allows the rapid release of very strong anions such as sulfonic acids that may be retained irreversibly by strong anion exchangers• Can be used in some reversed-phase applications (due to ethyl spacer); however, it is predominately used as an ion-exchange or normal phase sorbent due to its polar nature

Legal Information

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

matrix active groupamino phase
materialPE frit (20 µm)
materialpolypropylene
matrixsilica gel base material (irregularly shaped, acid washed)
pore size70 Ã… pore size
volume3 mL
Featured IndustryFood and Beverages
packagingpk of 54
separation techniquenormal phase
separation techniqueion exchange
Quality Level100
featureendcapped
particle size50 µm
compositionbed wt., 500 mg
pKa9.8
surface area480 m2/g
capacity~0.43 meq/g capacity