Phenomenex
8L-S038-TAK Phenomenex Strata™-X-AW 33 µm Polymeric Weak Anion, 30 mg / 1 mL, Tubes , 100/Pk
8L-S038-TAK Phenomenex Strata™-X-AW 33 µm Polymeric Weak Anion, 30 mg / 1 mL, Tubes , 100/Pk
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£187.90
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A weak anion-exchange functionalized polymeric sorbent that allows for complete retention of acidic compounds with a pKa less than 5, making 100% organic wash conditions possible. A 100% organic wash ensures that the maximum amount of interferences are removed from the target compound.
Starting Method
For Acids with pKa ≤ 5
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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 25 mM Ammonium Acetate Buffered, pH 6-7
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Wash 2:
1 mL Methanol
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Elute Any Acid:
2x 500 µL 5 % NH4OH in Methanol
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Elute Weak Acids:
2x 500 µL 5 % Formic Acid 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.
