Welch Materials / Welchrom

Welchrom

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Welchrom® HPLC columns are manufactured by Welch Materials Inc., located in Shanghai, China. The phases are based on high-purity spherical silica gel, which is available in two different reversed-phase modifications. Due to a new bonding and endcapping technique, Welchrom® columns show symmetrical peak shape and low back pressure.

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Technical Data

Phase-Name

Modification

Particle Size

Pore Size

End-capping

C-Content

USP

Surface

pH-Range

Tmax

Welchrom® XB-C18

C18

5 µm

120 Å

+

17%

N/A

320 m2/g

1.5‒10.0

N/A

Welchrom® XB-C8

C8

5 µm

120 Å

+

11%

N/A

320 m2/g

1.5‒10.0

N/A

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