Stainless steel columns with non-ionic carbamoyl [-C(NH₂)O] groups on a silica gel basis suitable for the separation of hydrophilic and polar compounds.

Max. pressure: 150 kg/cm²

Organic solvents: 0–100%

pH: 2 to 7,5

Salt concentration: 100 mM

Temperature stability: 4 - 80 °C