GPC/SEC Columns: Powerful Solutions for Size Separation

Our high performance columns are the result of comprehensive research focusing on the development of more efficient and robust gel materials and an improved packing technology. We manufacture stationary phase gels for the chromatography able to separate synthetic and natural macromolecules by their hydrodynamic volume.

PSS offers the widest range of column materials optimized for aqueous or organic solvents alike:

Aqueous solvents:

• MCX columns for aqueous GPC/SEC of sulfonated polymers
• NOVEMA columns for aqueous GPC/SEC of polycations
• PROTEEMA columns for aqueous GPC/SEC separation of proteins
• SUPREMA columns for aqueous GPC/SEC of neutral and anionic polymers

Organic solvents

• GRAM columns for polar polymers in medium polar organic solvents
• PFG columns for crystalline polymers in fluorinated organic solvents
• POLEFIN columns for polyolefines
• SDV columns for polymers in unpolar and medium polar organic solvents

The PSS column concept is to minimize interactions between polymer and stationary phases. In general, the sample is the determinant factor: the polarity of the sample defines the polarity of the solvent and therefore also that of the stationary phase. To ensure interaction free chromatography the stationary phase needs to be selected carefully. PSS allows the selection of stationary phases of different polarities. The PSS Magic Triangle (see Figure) provides a quick visual aid for the selection of columns, where the three sides represent sample, mobile phase, and stationary phase.

Construct an isosceles triangle by locating the polarity of sample and mobile phase; the peak of the Magic Triangle guides you to the proper stationary phase.