52638-U
Discovery® DSC-NH2 SPE Tube
bed wt. 500 mg, volume 6 mL, pk of 30
About This Item
Recommended Products
material
PE frit (20 μm)
polypropylene
Quality Level
feature
endcapped
composition
bed wt., 500 mg
packaging
pk of 30
technique(s)
solid phase extraction (SPE): suitable
surface area
480 m2/g
volume
6 mL
matrix
silica gel base material (irregularly shaped, acid washed)
matrix active group
amino phase
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This Item | 52636-U | 52637-U | 52640-U |
---|---|---|---|
silica gel base material (irregularly shaped, acid washed) | silica gel base material (irregularly shaped, acid washed) | silica gel base material (irregularly shaped, acid washed) | silica gel base material (irregularly shaped, acid washed) |
amino phase | amino phase | amino phase | amino phase |
50 μm | 50 μm | 50 μm | 50 μm |
70 Å pore size | 70 Å pore size | 70 Å pore size | 70 Å pore size |
6 mL | 1 mL | 3 mL | 6 mL |
General description
Sample 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
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
>464.0 °F
Flash Point(C)
> 240 °C
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Articles
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
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
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