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www.restek.comLC COLUMNS
Prep Columns
Ultra Preparative Columns
Using Restek® Ultra columns for preparative applications can save you time, solvents,
and money. By utilizing the right phase for your prep analysis, you can make sure your
peaks are resolved and your compounds are pure. The Ultra line has high loading and
features high-purity silica.
USLC® Phases for Preparative HPLC
Column Characteristics:
particle size:
5 µm, spherical
pore size:
100 Å
carbon load:
15%
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
AqueousC18
D
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USLC® Column Interaction Profile
(See
page 161for more information.)
Aqueous C18
Si
OO
P
Aqueous C18
Si
OO
P
Chromatographic Properties
The Restek® IBD is a polar-embedded column that acts as a strong hydrogen bonder and may be
the most versatile column available today. With a unique polar group, this column is very reten-
tive and selective for acids. It also provides symmetrical peak shape for strong bases. Restek’s
IBD is compatible with 100% aqueous mobile phases and can be used under reversed-phase or
HILIC conditions to retain very polar, ionic compounds in highly organic mobile phases.
Ultra IBD HPLC Prep Columns
Column Characteristics:
particle size:
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
IBD
CH
3
CH
3
O
Si
P
IBD
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USLC® Column Interaction Profile
(See
page 161for more information.)
IBD
CH
3
CH
3
O
Si
P
Chromatographic Properties
The Restek® Aqueous C18 is a rugged, reversed-phase column with a well-balanced retention
profile. It can effectively retain more types of solutes than a conventional C18 and is ideal for
multicomponent LC-MS analyses. The general-purpose Aqueous C18 boasts high reproducibil-
ity and compatibility with many mobile phase conditions—even 100% aqueous. And when used
with a gradient, it eliminates the all-too-common issue of multiple compounds eluting near the
column void time.
Ultra Aqueous C18 HPLC Prep Columns
10 mm ID
21.2 mm ID
30 mm ID
Length
cat.#
price
cat.#
price
cat.#
price
5 µm Columns
50 mm
9178557
9178558
9178559
100 mm
9178517
9178518
9178519
150 mm
9178567
9178568
9178569
250 mm
9178577
9178578
9178579
10 mm ID
21.2 mm ID
30 mm ID
Length
cat.#
price
cat.#
price
cat.#
price
5 µm Columns
50 mm
9175557
9175558
9175559
100 mm
9175517
9175518
9175519
150 mm
9175567
9175568
9175569
250 mm
9175577
9175578
9175579