Chemical Description:
Bur-sec amine-modified polystyrene-N vinylpyrrolidone-divinylbenzene incorporating non-ionized hydroxyl groups
Average particle size:
30 µm, 60 µm
Average pore size:
90 Å
Packing type:
Nonpolar/weak anion exchange (pKa~9)
Applications:
WAX can be used to extract acidic analytes (e.g. sulfonic acids) from biological fluids and other aqueous matrices. Performance is not affected by filler drying out.
| Model Code | Specification | Package | Waters Oasis® WAX Part # | Unit Price (USD/Box) |
|---|---|---|---|---|
| PS.SPE.WAX.10.1 | 10mg/1ml | 100 pcs/box | 186004651 | 94.9 |
| PS.SPE.WAX.30.1 | 30mg/1ml | 100 pcs/box | 186002491/186002489 | 94.9 |
| PS.SPE.WAX.60.1 | 60mg/1ml | 100 pcs/box | 99.9 | |
| PS.SPE.WAX.30.3 | 30mg/3ml | 50 pcs/box | 84.9 | |
| PS.SPE.WAX.60.3 | 60mg/3ml | 50 pcs/box | 186002492/186002490 | 84.9 |
| PS.SPE.WAX.100.3 | 100mg/3ml | 50 pcs/box | 89.9 | |
| PS.SPE.WAX.100.6 | 100mg/6ml | 30 pcs/box | 84.9 | |
| PS.SPE.WAX.200.6 | 200mg/6ml | 30 pcs/box | 84.9 | |
| PS.SPE.WAX.500.6 | 500mg/6ml | 30 pcs/box | 186004647 | 169.9 |
Request a Free WAX Evaluation Kit for Your Lab
Poseidon WAX cartridges feature the same tertiary amine modified polymeric backbone and mixed-mode weak anion exchange mechanism as Waters Oasis® WAX. They provide equivalent recovery and precision for short- and long-chain PFAS compounds under EPA Method 533 and EPA Draft Method 1633, with low blank background levels.
Because WAX features weak anion exchange groups (pKa ~ 9), strong acidic compounds (like sulfonic acids) are retained under neutral or acidic conditions. To elute them, you neutralize the positive charge on the sorbent by raising the pH using a basic elution solvent, typically Methanol containing 2% to 5% Ammonium Hydroxide (NH₄OH).
Choose WAX when your target compounds are strong acids (pKa < 1, such as sulfonic acids, perfluorinated acids, or organophosphates) that bind too strongly to strong anion exchangers (MAX) and cannot be easily eluted. Choose HLB for general neutral/acidic/basic screening, and MAX for weak acids (carboxylates).
Yes! We offer free evaluation sample packs (including 5–10 cartridges) for accredited testing laboratories, CROs, and academic research labs. Fill out the “Request Free Sample Kit” form above to receive your free box.
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