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  • Practical comparison of LC columns packed with different superficially porous particles for the separation of small molecules and medium size natural products.

Practical comparison of LC columns packed with different superficially porous particles for the separation of small molecules and medium size natural products.

Journal of separation science (2011-09-22)
Peilin Yang, Terry McCabe, Matthias Pursch
ABSTRACT

Commercial C(18) columns packed with superficially porous particles of different sizes and shell thicknesses (Ascentis Express, Kinetex, and Poroshell 120) or sub-2-μm totally porous particles (Acquity BEH) were systematically compared using a small molecule mixture and a complex natural product mixture as text probes. Significant efficiency loss was observed on 2.1-mm id columns even with a low dispersion ultra-high pressure liquid chromatography system. The Kinetex 4.6-mm id column packed with 2.6-μm particles exhibited the best overall efficiency for small molecule separations and the Poroshell 120 column showed better performance for mid-size natural product analytes. The Kinetex 2.1-mm id column packed with 1.7-μm particles did not deliver the expected performance and the possible reasons besides extra column effect have been proved to be frictional heating effect and poor column packing quality. Different column retentivities and selectivities have been observed on the four C(18) columns of different brands for the natural product separation. Column batch-to-batch variability that has been previously observed on the Ascentis Express column was also observed on the Kinetex and Poroshell 120 column.

MATERIALS
Product Number
Brand
Product Description

Supelco
Ascentis® Express C18, 2 μm Guard Cartridge, 2 μm particle size, L × I.D. 5 mm × 2.1 mm, pkg of 3 ea
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 7.5 cm × 4.6 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 10 cm × 4.6 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 25 cm × 4.6 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 5 cm × 3 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 15 cm × 4.6 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 7.5 cm × 3 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 25 cm × 2.1 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 2 cm × 2.1 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 10 cm × 3 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 15 cm × 3 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 3 cm × 3 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 3 cm × 2.1 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 5 cm × 2.1 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 25 cm × 3 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 3 cm × 4.6 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 7.5 cm × 2.1 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 10 cm × 2.1 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 5 cm × 4.6 mm
Supelco
Ascentis® Express C18, 5 μm HPLC Column, 5 μm particle size, L × I.D. 15 cm × 2.1 mm
Supelco
Ascentis® Express C18, 2.7 Micron Capillary HPLC Column, 2.7 μm particle size, L × I.D. 5 cm × 500 μm
Supelco
Ascentis® Express C18, 2.7 Micron Capillary HPLC Column, 2.7 μm particle size, L × I.D. 15 cm × 300 μm
Supelco
Ascentis® Express C18, 2.7 Micron Capillary HPLC Column, 2.7 μm particle size, L × I.D. 5 cm × 300 μm
Supelco
Ascentis® Express C18, 2.7 Micron Guard Cartridge, 2.7 μm particle size, L × I.D. 5 mm × 4.6 mm, pkg of 3 ea
Supelco
Ascentis® Express C18, 2.7 Micron Guard Cartridge, 2.7 μm particle size, L × I.D. 5 mm × 2.1 mm, pkg of 3 ea
Supelco
Ascentis® Express C18, 2.7 Micron Guard Cartridge, 2.7 μm particle size, L × I.D. 5 mm × 3 mm, pkg of 3 ea
Supelco
Ascentis® Express C18, 2.7 Micron Capillary HPLC Column, 2.7 μm particle size, L × I.D. 15 cm × 500 μm
Supelco
Ascentis® Express C18, 2.7 μm HPLC Column, 2.7 μm particle size, L × I.D. 7.5 cm × 2.1 mm
Supelco
Ascentis® Express C18, 2.7 μm HPLC Column, 2.7 μm particle size, L × I.D. 3 cm × 2.1 mm
Supelco
Ascentis® C18 HPLC Column, 5 μm particle size, L × I.D. 15 cm × 21.2 mm