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52664-U

Supelco

Discovery® DSC-SAX SPE Tube

bed wt. 500 mg, volume 3 mL, pk of 54

Synonym(s):

SAX SPE cartridge tube, Strong Anion Exchange

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About This Item

UNSPSC Code:
41115712
NACRES:
NB.21

material

polypropylene tube

composition

bed wt., 500 mg

packaging

pk of 54

technique(s)

solid phase extraction (SPE): suitable

surface area

480 m2/g

volume

3 mL

matrix

Silica gel base material (irregularly shaped, acid washed)

matrix active group

ammonium ion, quaternary bonding, polymerically bonded, chloride counter-ion

particle size

50 μm

pore size

0.9 mL/g pore volume
70 Å pore diameter

capacity

0.14 meq/g total capacity

application(s)

food and beverages

separation technique

ion exchange

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General description

Retention Mechanism: Anion-exchange
Sample 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

Legal Information

Discovery is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

>464.0 °F

Flash Point(C)

> 240 °C

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Certificates of Analysis (COA)

Lot/Batch Number
168809201
14428201
12962401
12257601
11030201

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Articles

Solid Phase Extraction: Ion Exchange Methodology

SPE retention mechanism in this case is based on the electrostatic attraction of charged functional groups of the analyte(s) to oppositely charged functional groups on the sorbent.

Protocols

Solid Phase Extraction: Normal Phase Methodology

Retention occurs through polar interaction between the sorbent and analytes. Typical sample matrices that can be employed in normal-phase SPE include hydrocarbon or fatty oils diluted in a solvent like hexane, isooctane, chlorinated solvent, THF, diethyl ether, or ethyl acetate.

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