The Ultra line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, type B silica that minimizes activity and creates high density bonding, these columns are designed for selective and reliable HPLC applications.

particle size: 3 µm or 5 µm, spherical
pore size: 100 Å
endcap: no
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L3
phase category: bare silica
ligand type: none
properties:

• High-purity, high–surface area silica.
• General-purpose column for normal phase and HILIC modes.