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 Polymerical...


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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

application(s)food and beverages
capacity~0.43 meq/g capacity
compositionbed wt., 500 mg
featureendcapped
materialPE frit (20 µm), polypropylene
matrix active groupamino phase
matrixsilica gel base material (irregularly shaped, acid washed)
packagingpk of 54
particle size50 µm
pKa 9.8
pore size70 Å pore size
product lineDiscovery®
Quality Level100
separation techniquenormal phase, ion exchange
surface area480 m2/g
technique(s)solid phase extraction (SPE): suitable
volume3 mL
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