Reversed Phase (ODS)
|Usable pH range||:||2.0-7.5|
ODS-AM is a high carbon load C18 packing that is similar in selectivity to ODS-A. The major difference between these bonded phases is that ODS-AM has extremely tight specification criteria which provides excellent peak shape and more reproducible separation.
- Excellent peak symmetry: Virtually no residual silanol activity
- Selectivity similar to ODS-A
This figure shows the plot of separation factor(α) of methyl paraben/2,6-dimethylpyridine for past ten lots of ODS-AM. The rigorous quality control system applied by YMC minimizes the difference between each lot and provides high reproducibility for the separation of basic compounds.
Metallic contaminants with the base silica cause significant tailing of coordination compounds such as 8-quinolinols or acetylacetones. ODS-AM provides chromatographers excellent peak shape because YMC controls the distribution level of metallic contaminants in the silica gel to keep it to a minimum.