The ReproSil XR columns from Dr. Maisch possess a metal content of less than 100 ppb. As a result, they show a high ph stability. The narrow pore size distribution and uniform coverage with the bonded phase lead to symmetrical peaks for acidic and basic compounds.
| Phase | Modification | Particle size / μm | Carbon content / %C | Endcapped | pH range | USP Code |
| C18 | C18 | 3, 3.5, 4, 5, 7, 10 | 10 | + | 2.0-9.0 | L1 |
| C18-MS | C18 | 3, 5 | N/A | N/A | 2.0-9.0 | L1 |
| C8 | C8 | 3, 3.5, 5, 10 | 5 | + | 2.0-8.0 | L7 |
| C4 | C4 | 5 | N/A | + | 2.0-8.0 | L26 |
| C2 | C2, Dimetdyl | 5 | N/A | + | 2.0-8.0 | L16 |
| Phenyl | Ph | 3, 3.5, 5, 10 | 6 | + | 2.0-8.0 | L11 |
| NH2 | NH2 | 3, 3.5, 5, 10 | N/A | - | 2.0-8.0 | L8 |
| NH2-e | NH2 | 5 | N/A | + | 2.0-8.0 | L8 |
| CN | CN | 3, 5 | N/A | N/A | 2.0-8.0 | N/A |
| SCX | Sulfopropyl | 3, 5 | N/A | N/A | 2.0-8.0 | L9 |
| SAX | Propyl-SAX | 3, 5 | N/A | N/A | 2.0-8.0 | L14 |
| Si | Si | 3, 5, 7, 10 | - | - | 2.0-8.0 | L3 |
| Phase | Modification | Particle size / μm | Endcapped | pH range | USP Code |
| C4 | C4 | 3, 5, 10 | + | 2.0-8.0 | L26 |
| C8 | C8 | 3, 5, 10 | + | 2.0-8.0 | L7 |
| C18 | C18 | 3, 5, 10 | + | 2.0-9.0 | L1 |
| SCX | Sulfopropyl | 3, 5 | N/A | 2.0-8.0 | L9 |