Silica gel modified with propylsulfonic acid, very strong cation exchanger (SCX). Capacity ~ 0.7 meq/g, contrary to the SA phase no π-π interactions. If you are looking for PSA (primary and secondary amine – used with QuEChERS mixes), please see QuEChERS or Diamino.
| Method | Solid phase extraction (SPE) |
| Brand | CHROMABOND |
| Phase | PSA |
| Mode | Ion exchange (IEX) |
| Base material | Silica gel |
| Surface chemistry | Silica gel with propylsulfonic acid (PSA) modification, very strong cation exchanger (SCX) |
| Endcapped | No |
| Column type | SPE column |
| Hardware | Polypropylene (PP) columns with polyethylene (PE) filter elements |
| Column shape | Open tubular syringe-shaped column with Luer tip outlet |
| Column volume | 3 mL |
| Filling quantity | 500 mg |
| Column volume/adsorbent weight | 3 mL/500 mg |
| Recommended application(s) | Weak cations |
| Particle type | Fully porous particles (FPP) |
| Particle size | 45 µm |
| Particle shape | Irregular |
| Specific surface according to BET | 500 m²/g |
| pH stability | 2.0–8.0 |
| Filter element material | Polyethylene (PE) |
| Storage temperature | 15–25 °C / 59–77 °F |
| Scope of delivery | 50x (10×5 in aluminum bags each) SPE columns, certificate of analysis |
| Gross weight (incl. packaging) | 246 g / 0.54 lbs |
| Packaging dimensions | 145 x 145 x 102 mm / 5.71 x 5.71 x 4.02 Inch |
| Hazardous material | No |
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