Restek-2015

178 / 628

176
LC COLUMNS
Columns for Bioseparations
Restek-
manufactured
silica
Column Characteristics:
particle size: 5 µm, spherical
pore size: 300 Å
carbon load: 3.5%
end-cap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L26
phase category: C4, butylsilane
ligand type: monomeric C4
Si CH3 CH3
O
C4
Restek-
manufactured
silica
Column Characteristics:
particle size: 5 µm, spherical
pore size: 300 Å
carbon load: 7%
end-cap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase: L11
phase category: phenyl
ligand type: unique Biphenyl
Biphenyl
Si CH3 CH3
O
Restek-
manufactured
silica
Column Characteristics:
particle size: 5 µm, spherical
pore size: 300 Å
carbon load: 5%
end-cap: yes
pH range: 2.5 to 8
temperature limit: 80 °C
USP phase code: L43
phase category: fluorophenyl
propyl
ligand type: pentafluorophenyl
propyl
PFP Propyl
Si CH3 CH3
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.
Viva Biphenyl Columns (USP L11)
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.
Viva PFP Propyl Columns (USP L43)
Chromatographic Properties
Base-deactivated, wide-pore packing exhibits excellent peak shape for a wide range of
compounds. Less retention in reversed-phase assays than Viva C18 or Viva C8.
Viva C4 Columns (USP L26)
1.0 mm ID 2.1 mm ID 3.0 mm ID 4.6 mm ID
Length cat.# price cat.# price cat.# price cat.# price
5 µm Columns
30 mm 9512531 9512532 951253E 9512535
50 mm 9512551 9512552 951255E 9512555
100 mm 9512511 9512512 951251E 9512515
150 mm 9512561 9512562 951256E 9512565
200 mm 9512521 9512522 951252E 9512525
250 mm 9512571 9512572 951257E 9512575
1.0 mm ID 2.1 mm ID 3.0 mm ID 4.6 mm ID
Length cat.# price cat.# price cat.# price cat.# price
5 µm Columns
30 mm 9516531 9516532 951653E 9516535
50 mm 9516551 9516552 951655E 9516555
100 mm 9516511 9516512 951651E 9516515
150 mm 9516561 9516562 951656E 9516565
200 mm 9516521 9516522 951652E 9516525
250 mm 9516571 9516572 951657E 9516575
1.0 mm ID 2.1 mm ID 3.0 mm ID 4.6 mm ID
Length cat.# price cat.# price cat.# price cat.# price
5 µm Columns
30 mm 9519531 9519532 951953E 9519535
50 mm 9519551 9519552 951955E 9519555
100 mm 9519511 9519512 951951E 9519515
150 mm 9519561 9519562 951956E 9519565
200 mm 9519521 9519522 951952E 9519525
250 mm 9519571 9519572 951957E 9519575