Discovery DSC - SAX SPE Tube, lit wt. 1 g, volume 6 mL, lot de 30

Code: 52666-u D2-231

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

General description

Retention Mechanism: Anion-exchangeSample Matrix Compatibility: Organic or aqueous solutions A polymerically bonded quar...


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

General description

Retention Mechanism: Anion-exchangeSample Matrix Compatibility: Organic or aqueous solutions A polymerically bonded quarternary amine that remains positively charged at all pH levels Counter ion is Cl- Ion exchange capacity is ~ 0.14 meq/g Commonly used when extracting weaker anions (e.g., carboxylic acids) that may not bind strongly enough to weaker anion-exchangers Selectivity can be modified by changing the counter ion with the appropriate buffer during conditioning

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

application(s)food and beverages
capacity0.14 meq/g total capacity
compositionbed wt., 1 g
materialpolypropylene tube
matrix active groupammonium ion, quaternary bonding, polymerically bonded, chloride counter-ion
matrixSilica gel base material (irregularly shaped, acid washed)
packagingpk of 30
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
volume6 mL
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