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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
Dispers ion H-Bonding
Polarizabili ty CationExchange
USLC® Column Interaction Profile
(See for 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
CH3 CH3
O
Si
P
IBD
Dispersi on H-B onding
Polarizability CationExchange
USLC® Column Interaction Profile
(See for more information.)
IBD
CH3 CH3
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