ReproSil pHoenix
pH-Stable Reversed-Phase HPLC Columns for Extreme Conditions
ReproSil pHoenix is a reversed-phase HPLC column series from Dr. Maisch HPLC GmbH, specifically engineered for long-term stability under extreme pH conditions. Built on ultra-high-purity, fully porous silica with special surface modification and bonding chemistry, these columns offer robust performance from pH 1 to 12, making them ideal for the analysis of acidic, basic, or ionizable compounds in challenging mobile phase environments.
ReproSil pHoenix columns are available in standard reversed-phase selectivities such as C18, and are suited for both analytical and method development tasks where column durability and retention reproducibility are critical.
ReproSil pHoenix columns from Dr. Maisch HPLC GmbH deliver exceptional chemical stability and selectivity – ideal for high-performance HPLC applications where pH tolerance and reproducibility are essential.
Specifications
| Particle Sizes | 1.5 – 10 µm |
|---|---|
| Phases/Modifications | C18 |
| Pore Sizes | 100 Å |
| Surface Areas | 470 m²/g |
Key Features:
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Stable bonded phase for extended pH range (1–12)
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Ultra-pure silica with proprietary surface protection
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Compatible with aggressive aqueous, acidic, or basic eluents
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Excellent retention and peak shape for basic and polar analytes
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Developed and manufactured by Dr. Maisch HPLC GmbH
Typical Applications:
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Analysis of ionizable drugs and degradation products
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Method development under high or low pH conditions
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Stability-indicating assays in pharmaceutical QC
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Long-term reversed-phase operation in regulated environments
ReproSil pHoenix C18 (direct replacement for Gemini C18)
Material Numbers
| Phase | Material Number |
|---|---|
| ReproSil pHoenix C18, 1.5 µm | ph119.9e. |
| ReproSil pHoenix C18, 3 µm | ph13.9e. |
| ReproSil pHoenix C18, 5 µm | ph15.9e. |
| ReproSil pHoenix C18, 7 µm | ph17.9e. |
| ReproSil pHoenix C18, 10 µm | ph10.9e. |