Welch Materials Xtimate - High-Performance HPLC Columns for Precise Analyses

Xtimate^® HPLC columns are manufactured by Welch Materials Inc., located in Shanghai, China.

There are two types of Xtimate^® HPLC columns, those based on Hybrid Silica-Polymer packing materials, and those based on pure polymer media.

Xtimate^® hybrid phases are available with different reversed-phase modifications and show high stability and long column lifetime.

Xtimate^® SEC was developed for aqueous size exclusion chromatography. The base material is a high purity silica-gel, modified with a hydrophilic polymer and diol functional groups.

Xtimate^® G10 Glucan Gel is a special column for cephalosporine analysis.

Xtimate^® Sugar-Ca and Sugar-H are based on modified polystyrene-divinylbenzene polymer with 8% cross-linking. The columns are applicable for sugar‒ and carbohydrate analysis.

Xtimate^® PS/DVB are based on unmodified polystyrene-divinylbenzene polymer.

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Technical Data

Phase-Name	Modification	Particle Size	Pore Size	End-capping	C-Content	USP	Surface	pH-Range	Tmax
Xtimate^® C18	C₁₈	3, 5, 10 µm	120 Å 200 Å 300 Å	+	14%	N/A	320 m²/g	1.0‒12.5	N/A
Xtimate^® C8	C₈	3, 5, 10 µm	120 Å 200 Å 300 Å	+	10%	N/A	320 m²/g	1.0‒12.5	N/A
Xtimate^® C4	C₄	3, 5, 10 µm	120 Å 200 Å 300 Å	+	7%	N/A	320 m²/g	1.0‒12.5	N/A
Xtimate^® Phenyl-Hexyl	Phenylhexyl	3, 5, 10 µm	120 Å 200 Å 300 Å	-	12%	N/A	320 m²/g	1.0‒12.5	N/A
Xtimate^® CN	Cyano	3, 5, 10 µm	120 Å 200 Å 300 Å	+	6%	N/A	320 m²/g	1.0‒12.5	N/A
Xtimate^® Polar-RP	Polar embedded Alkyl	3, 5, 10 µm	120 Å 200 Å 300 Å	-	14%	N/A	320 m²/g	1.0‒12.5	N/A
Xtimate^® SEC	N/A	3, 5 µm	120 Å 300 Å 700 Å 1000 Å	+	N/A	N/A	N/A	2.0‒7.5	N/A
Xtimate^® G-10	N/A	40‒120 µm	60 Å	N/A	N/A	N/A	N/A	2.0‒13.0	N/A
Xtimate^® Sugar-Ca	N/A	5, 8 µm	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Xtimate^® Sugar-H	N/A	5, 8 µm	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Xtimate^® PS/DVB	N/A	5 µm	120 Å 300 Å 500 Å 1000 Å	N/A	N/A	N/A	N/A	1.0‒14.0	N/A