HPLC COLUMNS
pHidelity® Columns
Phone: 800-356-1688 or 814-353-1300
10
ordering
note
To order a 2.1mm, 3.2mm, or 4.6mm ID columnwith a Trident
™
Integral Inlet Fitting, add “-700” to the catalog number for the column.
Nominal additional charge
$15.00
Example: 100mm x 4.6mm IDUltraC18 columnwithTrident
™
Integral Inlet Fitting: 9174315-700
Also order anXG-XF fitting (cat.#25026 or 25062), see page 37.
For guard cartridges for these columns, see page 39.
pHidelity®C18Columns
ChromatographicProperties:
Excellent stabilityunder extreme pH conditions.TrueC18 selectivity in a silica-based stationaryphase.
particle size: 3µm
pore size: 140Å
pH limit: up to12
temperature limit: 80°C
pHidelity®C18Columns
PhysicalCharacteristics:
• Stableunder extreme pH conditions.
• Patented technologyprotects the silicaparticle fromdissolution.
• TrueC18 selectivity.
Restek is pleased tooffer pHidelity®C18 columns, designed for analyses that require extreme pH condi-
tions. Using technology patented by Selerity Technologies (US Patent 2005/0191503A1), pHidelity®
silica-based columns have exceptional stabilityunder aggressive pH conditions.
In pHidelity® columns, a polycarbosilane barrier layer protects the silica particle from extremely basic
conditions. This layer, withmultiple points of attachment to the silica particle, yields amodified surface
with enhanced stability.A second layer is thenattached,providing the functional group (C18). Using this
approach to shield the silica surface, ahighlydurable stationaryphase is created.
Even after 50 hours of exposure to base (pH 10) at 60°C, a pHidelity® column maintains its original
column efficiency. (A decrease in column efficiency indicates the dissolution of support silica and loss
from the column.) This exceptional performance ensures pHidelity® columns offer greater resolution
under harshmobile phase conditions and will continue to resolve your target compounds over a long
column lifetime.A pHidelity® column alsomaintains a very consistent capacity factor, k’, after exposure
topH 10 and 60°C.Under extremely basic conditions, a decrease in retention time indicates loss of both
support silica and bonded phase. Backpressure in the pHidelity® C18 column is very stable, indicating
little or nodegradationof the packingmaterial.
The patented process used to protect the support silica in pHidelity® columns ensures more consistent
retention times over the lifetime of the column.
Application
Page#
BasicDrugs . . . . . . . . . . . . . .94
SerotoninReuptake
Inhibitors . . . . . . . . . . . . . . .90
2.1mm ID
3.2mm ID
4.6mm ID
Length
cat.#
price
cat.#
price
cat.#
price
3µmColumns
30mm
9579332
$440
9579333
$440
9579335
$440
50mm
9579352
$435
9579353
$440
9579355
$440
100mm
9579312
$455
9579313
$455
9579315
$455
150mm
9579362
$470
9579363
$470
9579365
$470
