169
LC COLUMNS
Columns for HPLC
Ultra HPLC Columns: 3 or 5 µm particles; 100 Å pore size
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.
AqueousC18
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USLC® Column Interaction Profile
(See
page 161for more information.)
Column Characteristics:
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
Aqueous C18
Si
OO
P
Aqueous C18
Si
OO
P
Column Characteristics:
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
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 Columns
(USP L1)
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 Columns
(USP L68)
2.1 mm ID
3.0 mm ID
4.6 mm ID
Length
cat.#
price
cat.#
price
cat.#
price
3 µm Columns
30 mm
9178332
917833E
9178335
50 mm
9178352
917835E
9178355
100 mm
9178312
917831E
9178315
150 mm
9178362
917836E
9178365
5 µm Columns
30 mm
9178532
917853E
9178535
50 mm
9178552
917855E
9178555
100 mm
9178512
917851E
9178515
150 mm
9178562
917856E
9178565
200 mm
9178522
917852E
9178525
250 mm
9178572
917857E
9178575
2.1 mm ID
3.0 mm ID
4.6 mm ID
Length
cat.#
price
cat.#
price
cat.#
price
3 µm Columns
30 mm
9175332
917533E
9175335
50 mm
9175352
917535E
9175355
100 mm
9175312
917531E
9175315
150 mm
9175362
917536E
9175365
5 µm Columns
30 mm
9175532
917553E
9175535
50 mm
9175552
917555E
9175555
100 mm
9175512
917551E
9175515
150 mm
9175562
917556E
9175565
200 mm
9175522
917552E
9175525
250 mm
9175572
917557E
9175575