Restek-OEM-Parts_780p - page 720

HPLC COLUMNS
Physical Characteristics of Restek HPLC Columns 5
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Chromatographic Properties Similar Phases
USP
Code Page#
Highly base-deactivated spherical silicamanufactured by Restek. Monomeric C18 bonding. Hypersil® BDS C18, Zorbax® Eclipse XDB-C18 L1 12
Highly base-deactivated spherical silicamanufactured by Restek. Monomeric C8 bonding.
Similar to Pinnacle™ DB C18, but the shorter alkyl chain provides less hydrophobic retention. Hypersil® BDS C8 L7 12
Highly base-deactivated spherical silicamanufactured by Restek. Cyano bonding. Hypersil® BDS Cyano,
Zorbax® Eclipse XDB-CN L10 13
Highly base-deactivated spherical silicamanufactured by Restek. Phenyl bonding. Hypersil® BDS Phenyl,
Zorbax® Eclipse XDB-Phenyl L11 13
Highly base-deactivated spherical silicamanufactured by Restek. — L3 13
Intermediate carbon load and surface area, suitable for awide range of neutral to acidic compounds.
Silicamanufactured by Restek. Hypersil® ODS, Spherisorb® ODS L1 14
Proprietary stationary phase; resolves 16 PAHs inUS EPAMethod 610. Silicamanufactured by Restek. Unique — 14
Provides shorter retention times for hydrophobic compounds than C18. Silicamanufactured by Restek. Hypersil® C8, Spherisorb® C8 L7 15
More rugged than bare silica for normal phase analyses. Silicamanufactured by Restek. Hypersil® CPS, Spherisorb® Cyano L10 15
Offers unique selectivity versus traditional alkyl chain phases, especially for aromatic compounds.
Silicamanufactured by Restek. Hypersil® Phenyl, Spherisorb® Phenyl L11 16
Silicamanufactured by Restek. Hypersil® APS 2 Amino, Spherisorb® Amino L8 16
Silicamanufactured by Restek. Unique biphenyl phase. Unique L11 17
Superior value phase for normal phase separation of polar analytes. Lower retention thanUltra C18.
Silicamanufactured by Restek. Hypersil® Silica L3 17
Most retentive phase for hydrophobic and slightly polar analytes. Mobile phase containing higher percentage
of organicmodifier contributes to higher sensitivity in ESI-based LC/MS.
Ultracarb® C18, BetaMax® Neutral,
Discovery® C18 L1 18
Highly retentive and selective for reversed phase separations of polar analytes. Highly base deactivated.
Compatiblewith highly aqueous (up to 100%) mobile phases. — L1 19
Highly retentive, highly selective phase, developed specifically for the analysis of aldehydes and ketones
as DNPH derivatives. Unique — 21
Highly retentive phase for analytes containing amino functionality. BetaMax® Base, Maxsil™ CN L10 18
A pentafluorophenyl phasewith a propyl spacer. Highly retentive for basic analytes. Excellent for beta-blockers,
halogenated compounds, nucleosides, nucleotides, pyridines, pyrimidines, tricyclic antidepressants. Discovery® HS F5 — 19
Single 30cm column performs equally to two C18 columns in series. (AOACMethod 986.13) Unique — 20
High purity, highly retentive phase for aromatic and unsaturated compounds. Unique L11 20
High purity, highly retentive phase for normal phase separation of polar analytes. Very high surface area. Maxsil™ Si L3 21
A very retentive, high-purity phase that exhibits excellent peak shape for awide range of compounds.
Recommended as a general purpose reversed phase column.
Discovery® C18, Symmetry® C18,
Hypersil® Gold C18, Luna® C18, Zorbax® C18,
Kromasil® C18, LiChrospher® RP-18,
Inertsil® ODS-2, Develosil® C18
L1 22
Highly retentive and selective for reversed phase separations of polar analytes. Highly base deactivated.
Compatiblewith highly aqueous (up to 100%) mobile phases.
AQUA® C18, Aquasil C18, Hypersil® Gold AQ,
YMC® ODS-Aq L1 23
One of a group of intrinsically base-deactivated (IBD) phases, with a polar groupwithin, or intrinsic to,
the alkyl bonded phase. Provides unique selectivity and high level of base deactivationwhile reducing or
eliminating the need formobile phase additives.
SymmetryShield™, Discovery® ABZ&ABZ+,
Prism™ — 22
Very retentive, high-purity, base-deactivated reversed phase packing that exhibits excellent peak shape
for awide range of compounds. Luna® C8, Symmetry® C8, Hypersil® Gold C8 L7 23
Exceptionally stable C4 packing, with high bonding coverage and silanol base-deactivation.
Exhibits shorter retention than C18 or C8 phases. Supelcosil™ Butyl (C4), Delta-Pak™ C4 L26 24
Exceptionally stable C1 packing resists hydrolysis, even under acidicmobile phase conditions.
Least retentive reversed phase hydrocarbon packing. Spherisorb® C1 L13 24
High-purity cyano phasewith reduced silanol activity. Often a better choice than C18 for basic pharmaceuticals.
Cyano is themost stable bonded phase for normal phasemode.
Platinum™ CN, Develosil® Cyano, Luna® CN,
Hypersil® Gold CN L10 25
High-purity, highly retentive, base-deactivated phasewith alternate selectivity to hydrocarbon phases,
especially for aromatic analytes.
Platinum™ Phenyl, Supelcosil™ Phenyl,
Betasil® Phenyl L11 25
Recommended for normal phase analyses of mono- and disaccharides and other similar compounds.
Can also serve as aweak anion exchanger, with aqueous buffers. Platinum™ Amino, Develosil® NH2 L8 26