Restek-2015

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LC COLUMNS
Prep Columns
Chromatographic Properties
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.
Column Characteristics:
particle size: 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
Ultra C18 HPLC Prep Columns
Traditional Phases for Preparative HPLC
Si CH3 CH3
O
C18
Column Characteristics:
particle size: 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
Si CH3 CH3
O
C8
Chromatographic Properties
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.
Ultra C8 HPLC Prep Columns
Si CH3 CH3
O
C18
PLEASE NOTE: We strongly recommend
ordering a semi-prep or prep column only
after evaluating the desired separation
on an equivalent analytical-scale column.
Because we cannot reuse a column or
the silica it contains once it has left our
facility, we cannot accept returns of
large-scale columns.
Before You Buy
a Prep Column...
10 mm ID 21.2 mm ID 30 mm ID
Length cat.# price cat.# price cat.# price
5 µm Columns
50 mm 9103557 9103558 9103559
100 mm 9103517 9103518 9103519
150 mm 9103567 9103568 9103569
250 mm 9103577 9103578 9103579
10 mm ID 21.2 mm ID 30 mm ID
Length cat.# price cat.# price cat.# price
5 µm Columns
50 mm 9174557 9174558 9174559
100 mm 9174517 9174518 9174519
150 mm 9174567 9174568 9174569
250 mm 9174577 9174578 9174579