150
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HPLCCOLUMNS
Physical Characteristics
pH ranges and temperature limits: see product listings on pages listed here.
Column lifetimewill be shorter when operating at pH and/or temperature extremes.
Restek
HPLCColumn
End
Cap?
Pore
Size (Å)
Carbon
load (%) Applications
Ultra II C18
Y
100
19
Ideal for anilines, barbiturates, carbonyls, fat-soluble vitamins, fatty acids, glycerides, phthalates, PTH amino acids,
steroids, other acids.
Ultra II Aqueous C18 N
100
15
Ideal for analyses that require>90%water in themobile phase. Excellent for highlywater soluble or poorly organic
soluble compounds. Excellent for water-soluble vitamins and organic acids.
Ultra II C8
Y
100
12 Selectivity and peak shape similar toUltra C18, but less hydrophobic retention.
Ultra II Biphenyl
Y
100
15
Excellent choice for the analysis of steroids, tetracyclines, drugmetabolites, and other compounds that contain some
degree of unsaturation.
Ultra II Aromax
Y
100
17 Alternative to Biphenyl whenmore retention is required.
Ultra II IBD
N
100
12
A polar group assists in deactivating surface silanols and contributes to unique separation selectivities for acids, bases,
zwitterions, and other polar compounds.
Ultra II PFPPropyl
Y
100
11
Highly retentive for basic analytes. An excellent phase for separating nucleosides, nucleotides, purines, pyrimidines, and
halogenated compounds.
Ultra II Silica
N
100
0 Ideal for normal phase applications.
Ultra II Carbamate
N
100
15 Rapid analysis of carbamates.
Ultra II Quat
Y
100
12 Proprietary phase for the analysis of paraquat and diquat and other quaternary amines.
PinnacleDBC18
Y
140
11 Hydrophobic C18 phase suitable for analyses of awide range of compounds, from acidic through slightly basic.
PinnacleDBAqueous
C18
— 140
6 Ideal for applications that require highly aqueousmobile phases, such as organic acids andwater-soluble vitamins.
PinnacleDBC8
Y
140
6
Applications similar to PinnacleDB C18, but with less hydrophobic retention. Less retention can be useful
for shortening analysis time, if resolution is adequate.
PinnacleDBPFP
Propyl
Y
140
6
Exhibits excellent peak shapes for awide range of compounds, including nucleosides, nucleotides,
and halogenated compounds.
PinnacleDBBiphenyl
Y
140
8
Excellent choice for the analysis of steroids, tetracyclines, drugmetabolites, and other compounds that contain some
degree of unsaturation.
PinnacleDBCyano
Y
140
4
Suitable for awide range of compounds, from acidic through slightly basic. Also useful for confirmation of
analyses on a C18 or C8 column. Can be used in normal phase or reversed phasemode of separation.
PinnacleDBPhenyl
Y
140
5.3 Suitable for polar aromatic compounds, fatty acids, purines and pyrimidines.
PinnacleDB Silica
— 140
— Normal phasemode of separation.
PinnacleDB IBD
Y
140
—
A polar group assists in deactivating surface silanols and contributes to unique separation selectivities for acids,
bases, zwitterions, and other polar compounds.
PinnacleDBPAH
Y
140
— Ideal for polycyclic aromatic hydrocarbons.
Pinnacle II C18
Y
110
13 Superior general purpose C18 for non-basic analytes.
Pinnacle II PAH
Y
110
— Maximum resolution of polycyclic aromatic hydrocarbons.
Pinnacle II C8
Y
110
7 Superior general purpose C8 for non-basic analytes.
Pinnacle II Cyano
Y
110
4 Superior general purpose cyano for weakly-basic analytes. Used in either normal or reversed phase analyses.
Pinnacle II Phenyl
Y
110
6 Superior general purpose phenyl for neutral analytes.
Pinnacle II Amino
N
110
2 Excellent general purpose amino phase. Excellent choice for carbohydrate analysis.
Pinnacle II Biphenyl
Y
110
— Multiple aromatic ring structures; excellent for explosives.
Pinnacle II Silica
— 110
— Ideal for polar analytes.
Allure C18
Y
60
27
Ideal forMS and light-scattering detection of neutral to slightly polar solutes. Separates basic compounds,
showing good deactivation; excellent for explosives or steroids.
Allure Aqueous C18
N
60
—
Ideal for analyses that require>90%water in themobile phase. Excellent for highlywater soluble or poorly organic
soluble compounds. Excellent for water-soluble vitamins and organic acids. More retention thanUltra Aqueous columns.
AllureAK
Y
60
— Ideal for the analysis of aldehydes and ketones as DNPH derivatives.
Allure Basix
Y
60
12
Ideal for LC/MS of basic solutes.
Excellent for basic pharmaceuticals or other amine-containing compounds.
Allure PFPPropyl
Y
60
17 Ideal forMS, ELSD, or NPD detection of nucleosides, nucleotides, purines, pyrimidines, or halogenated compounds.
AllureOrganic Acids
N
60
— Excellent resolution of challenging organic acids.
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Mar 2011
