HPLC COLUMNS
Physical Characteristics of Restek HPLC Columns
4
Phone: 800-356-1688 or 814-353-1300
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
Pinnacle
™
DBC18
Y
140
11 Hydrophobic C18 phase suitable for analyses of awide range of compounds, from acidic through slightly basic.
Pinnacle
™
DBC8
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
™
DBCyano
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.
Pinnacle
™
DBPhenyl
Y
140
5.3 Suitable for polar aromatic compounds, fatty acids, purines and pyrimidines.
Pinnacle
™
DB Silica
NA
140
NA Normal phasemode of separation.
Pinnacle
™
II C18
Y
110
13 Superior general purpose C18 for non-basic analytes.
Pinnacle
™
II PAH
Y
110
— Maximum resolution of polynuclear 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
NA
110
NA 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.
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
®
PFPPropyl
Y
60
17 Ideal forMS, ELSD, or NPD detection of nucleosides, nucleotides, purines, pyrimidines, or halogenated compounds.
Allure
®
Organic Acids N
60
NA Excellent resolution of challenging organic acids.
Allure
®
Biphenyl
Y
60
23
Multiple ring structure; excellent for aromatic and unsaturated compounds. Increased retention over
traditional phenyl phases.
Allure
®
Silica
NA
60
NA Highly retentive phase for normal phase separation.
Ultra C18
Y
100
20
Ideal for anilines, barbiturates, carbonyls, fat-soluble vitamins, fatty acids, glycerides, phthalates, PTH amino acids,
steroids, other acids.
Ultra 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 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 C8
Y
100
12 Selectivity and peak shape similar toUltra C18, but less hydrophobic retention.
Ultra C4
Y
100
9 Ideal for peptides and small proteins.
Ultra C1
NA
100
5
Alternative selectivity toUltra C18 or C8 columns, especially for polar analytes. Shortest chain alkyl phase
available for reversed phase separations.
Ultra Cyano
Y
100
8 Excellent for basic pharmaceuticals, steroids (normal or reversed phase conditions), or other basic compounds.
Ultra Phenyl
Y
100
10 Ideal for fatty acids, polynuclear aromatic hydrocarbons, purines and pyrimidines, and polar aromatics.
Ultra Amino
N
100
2 Superior general purpose amino phase. Ideal for carbohydrates.
