150
800-356-1688 or 814-353-1300
HPLC COLUMNS
Physical Character ist ics
pH ranges and temperature limits: see product listings on pages listed here.
Column lifetime will be shorter when operating at pH and/or temperature extremes.
Restek
HPLC Column
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 the mobile phase. Excellent for highly water 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 to Ultra C18, but less hydrophobic retention.
Ultra II Biphenyl
Y
100
15
Excellent choice for the analysis of steroids, tetracyclines, drug metabolites, and other compounds that contain some
degree of unsaturation.
Ultra II Aromax
Y
100
17 Alternative to Biphenyl when more 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 PFP Propyl
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.
Pinnacle DB C18
Y
140
11 Hydrophobic C18 phase suitable for analyses of a wide range of compounds, from acidic through slightly basic.
Pinnacle DB Aqueous
C18
— 140
6 Ideal for applications that require highly aqueous mobile phases, such as organic acids and water-soluble vitamins.
Pinnacle DB C8
Y
140
6
Applications similar to Pinnacle DB C18, but with less hydrophobic retention. Less retention can be useful
for shortening analysis time, if resolution is adequate.
Pinnacle DB PFP
Propyl
Y
140
6
Exhibits excellent peak shapes for a wide range of compounds, including nucleosides, nucleotides,
and halogenated compounds.
Pinnacle DB Biphenyl
Y
140
8
Excellent choice for the analysis of steroids, tetracyclines, drug metabolites, and other compounds that contain some
degree of unsaturation.
Pinnacle DB Cyano
Y
140
4
Suitable for a wide 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 phase mode of separation.
Pinnacle DB Phenyl
Y
140
5.3 Suitable for polar aromatic compounds, fatty acids, purines and pyrimidines.
Pinnacle DB Silica
— 140
— Normal phase mode of separation.
Pinnacle DB 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.
Pinnacle DB PAH
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 for MS 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 the mobile phase. Excellent for highly water soluble or poorly organic
soluble compounds. Excellent for water-soluble vitamins and organic acids. More retention than Ultra Aqueous columns.
Allure AK
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 PFP Propyl
Y
60
17 Ideal for MS, ELSD, or NPD detection of nucleosides, nucleotides, purines, pyrimidines, or halogenated compounds.
Allure Organic Acids
N
60
— Excellent resolution of challenging organic acids.
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Mar 2011
