For my fourth post in this series, I would like to focus on molecular sieve packed columns. At Restek, our three most common molecular sieve packings are the ShinCarbon, 5A, and 13X. The ShinCarbon is a carbon molecular sieve, while the 5A and 13X are zeolite molecular sieves.
| Max Temp | |
| Column and/or Packing | (°C) |
| ShinCarbon | 280 / 300* |
| Molecular Sieve 5A | 300 / 350** |
| Molecular Sieve 13X | 350** |
* May be briefly programmed to this temperature. Extended conditioning/drying at high temperatures may cause surface activity.
** Only use clean (hydrocarbon-free), dry nitrogen at the maximum temperature(s). Extended conditioning/drying using other carrier gases at high temperatures may cause surface activity.
