Chromatography Forum

Does anyone know a good resource that describes the different common phases and what they are used for, pH ranges, etc? All I have are some biased pamphlets from suppliers haha. But I'm more looking for specific applications of the different phases. Here, out of the roughly 30 columns we have (we don't throw anything away), I think maybe there is a CN and C8 somewhere.
I can't seem to find anything useful on google.

Thanks!

we have detailed description and way to sort applications by compound, column and detection technique:
http://www.sielc.com/Applications_By_Column.html
http://www.sielc.com/Applications_By_Compound.html