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Product Information
Phase Detail
Strata-X-CW SPE Products
Strata-X-CW solid phase extraction (SPE) sorbent is a polymeric strong cation exchange sorbent that can be used to cleanup weak bases
Strata-X-CW SPE Products
Strata-X-CW SPE Products
Weak Cation Mixed-Mode Solid Phase Extraction (SPE)
A weak cation-exchange functionalized polymeric sorbent that allows for complete retention of basic compounds with a pKa greater than 8, making 100% organic wash conditions possible. A 100% organic wash ensures that the maximum amount of interferences are removed from the target compound.
Brand Strata-X |
Recommended Use Extraction of basic compounds, particularly strong bases |
3 Mechanism of Retention
Weak Cation-Exchange
Ï€-Ï€ Bonding
Hydrophobic Interaction
Available Formats
96-Well-Plate
96-Well-Plate
1, 3, and 6mL Tubes
Giga Tubes (12-150mL Tubes)
On-line Cartridges
Starting Method
For Bases with pKa > 8
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Column:
1 mL Methanol
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Equilibrate:
1 mL Water, pH 6-7
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Load:
Diluted Sample, pH 6-7
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Wash 1:
1 mL Water, pH 6-7
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Wash 2:
1 mL Methanol (collect this fraction to analyze Neutrals/Acids)
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Elute Any Bases:
2x 500 µL 5 % Formic Acid in Methanol
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Elute Weak Bases:
2x 500 µL 5 % NH4OH in Methanol
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Based on 30 mg/1 mL sorbent mass. The above is a convenient starting point for SPE method development, further optimization may be required to tailor the method for your specific extraction needs.
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