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LC COLUMNS
Prep Columns
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...
Column Characteristics:
particle size:
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
Biphenyl
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USLC® Column Interaction Profile
(See
page 161for more information.)
Biphenyl
Si
CH
3
CH
3
O
Biphenyl
Si
CH
3
CH
3
O
Chromatographic Properties
The Restek® PFP Propyl is a great choice for the retention and selectivity of charged bases,
electronegative compounds, and amine-containing compounds. Unlike a conventional cyano
column, the Restek® PFP Propyl is much more amenable to LC-MS because it is more reliable
and efficient with acidic mobile phases. This versatile column is also compatible with highly
aqueous mobile phases and HILIC separations.
Ultra PFP Propyl Prep Columns
Column Characteristics:
particle size:
5 µm, spherical
pore size:
100 Å
carbon load:
11%
end-cap:
yes
pH range:
2.5 to 8
temperature limit: 80 °C
USP phase code:
L43
phase category:
fluorophenyl
propyl
ligand type:
pentafluoro-
phenyl propyl
PFPPropyl
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USLC® Column Interaction Profile
(See
page 161for more information.)
PFP Propyl
Si
CH
3
CH
3
O
F
F
F
F
F
Chromatographic Properties
Since 2005, the Restek® Biphenyl has offered a greater degree of dispersion than conventional
phenyls and a greater degree of polarizability than phenyl hexyls, creating higher selectivity and
a greater range of usability. Because of these heightened interactions, this column shows sub-
stantial increases in retention—especially for dipolar, unsaturated, or conjugated solutes—and
enhanced orthogonal selectivity when using methanol mobile phases. It is ideal for increasing
sensitivity and selectivity in LC-MS analyses.
Ultra Biphenyl Prep Columns
10 mm ID
21.2 mm ID
30 mm ID
Length
cat.#
price
cat.#
price
cat.#
price
5 µm Columns
50 mm
9109557
9109558
9109559
100 mm
9109517
9109518
9109519
150 mm
9109567
9109568
9109569
250 mm
9109577
9109578
9109579
10 mm ID
21.2 mm ID
30 mm ID
Length
cat.#
price
cat.#
price
cat.#
price
5 µm Columns
50 mm
9179557
9179558
9179559
100 mm
9179517
9179518
9179519
150 mm
9179567
9179568
9179569
250 mm
9179577
9179578
9179579