Our group specialized in Light Scattering at Merck has been trying very hard to get a consistently well performing size exclusion column for one of our modified protein products. We have tried for months on columns from several sources including TOSOH, Phenomenex and Shodex, and Waters. Neither of the column gave us the expected resolution and/or column consistency we needed. It is to our benefit that your company made the Sepax SRT SEC-500. It gives us the best resolution and most importantly very good column consistency for analysis of our protein product. We really appreciate Sepax introduction of this column to us. The wide range of temperature and pH stability is very unique feature of these columns, which makes it possible for us to explore wider analytical space in analyses of other products.
We acknowledge your effort in putting this product in the market, and would like to share this information to any interested researchers.
Sr. Research Chemist
Bioprocess and Bioanalytical Research
Merck Research Labs
The SAX column works beautifully. It is probably the highest resolution SAX column we have seen for proteins. The bottom line is that it looks like we have a new approach to proteomics involving protein fractionation exclusively.
Prof. Fred Regnier
"WOW! We were blown out of the water when we saw the chromatogram (generated using Zenix SEC) with such resolution difference."
- Method development group at major pharmaceutical company