The Stability phases are made of silica gel with a high surface and polar embedded basic or amide groups. Therefore, they are suitable for the analysis of basic compounds.
| Phase | Modification | Particle size / μm | Pore size / Å | Surface area / m²/g | Endcapped | USP Code |
| 100 C30 | C30, polymer | 3, 5, 10 | 100 | 350 | + | L62 |
| 100 C30-NE | C30, polymer | 5 | 100 | 350 | - | L62 |
| 100 C30-m | C30, monomer | 5 | 100 | 350 | + | L62 |
| 100 BS-C13 | C13 with basic spacer | 5 | 100 | 350 | + | N/A |
| 100 BS-C17 | C17 with basic spacer | 3, 5, 10 | 100 | 350 | + | L78 |
| 100 BS-C23 | C23 with basic spacer | 5 | 100 | 350 | + | L78 |
| 120 BS-C23 | C23 with basic spacer | 1.5, 3, 5 | 120 | N/A | - | L78 |
| 120 BS-C23-e | C23 with basic spacer | 5 | 120 | N/A | + | N/A |
| 300 BS-C23 | C23 with basic spacer | 5 | 300 | 100 | - | N/A |
| 100 Amide-C25 | C25 with amide group | 5 | 100 | 350 | + | N/A |
| 100 Amide-C18 | C18 with amide group | 3, 5 | 100 | 350 | + | N/A |
| 100 Amide-C16 | C16 with amide group | 3, 5 | 100 | 350 | + | N/A |
| 120 Amide-C12 | C12 with amide group | 1.5, 3, 5 | 120 | N/A | - | N/A |
| ABZ-Amid-C18 | N/A | 3, 5 | N/A | N/A | + | N/A |
| Basic-C18 | C18 | 3 | N/A | N/A | + | N/A |
| 100 Alumina | aluminium | 5 | N/A | N/A | N/A | N/A |
| Polyamine | N/A | 3, 5 | 300 | N/A | N/A | N/A |
| 100 Polyamine-2 | N/A | 3, 5, 10 | 100 | N/A | N/A | N/A |
| 300 Polyamine-2 | N/A | 3, 5, 10 | 300 | N/A | N/A | N/A |