HPLC & UHPLC Analytical Columns
Pharmaceutical; Ultra; Vitamins

particle size: 3 µm or 5 µm, spherical
pore size: 100 Å
carbon load: 12%
end-cap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L7
phase category: C8, octylsilane
ligand type: monomeric C8

Our C8 is a conventional monomeric octylsilane column offering a shorter alkyl chain to provide less hydrophobic retention and improved basic peak shape over a traditional C18 phase. Like our C18, this general-purpose Restek C8 is suitable for a wide range of compounds from acidic through slightly basic.

particle size: 3 µm or 5 µm, spherical
pore size: 100 Å
carbon load: 20%
end-cap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L1
phase category: C18, octadecylsilane
ligand type: monomeric C18

The general-purpose Restek C18 is a conventional monomeric octadecylsilane column suitable for analyses of a wide range of compounds from acidic through slightly basic.

particle size: 3 µm or 5 µm, spherical
pore size: 100 Å
carbon load: 15%
end-cap: no
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L1
phase category: modified C18
ligand type: proprietary polar modified and functionally bonded C18

particle size: 3 µm or 5 µm, spherical
pore size: 100 Å
carbon load: 12%
end-cap: no
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L68
phase category: polar-embedded alkyl
ligand type: proprietary polar functional embedded alkyl

particle size: 3 µm or 5 µm, spherical
pore size: 100 Å
carbon load: 15%
end-cap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase: L11
phase category: phenyl
ligand type: unique Biphenyl