Restek / Ultra

Ultra

The Ultra™ line represents Restek’s broadest selection of stationary phases on a single silica support. Made of high-purity, spherical silica, that minimizes activity and creates high-density bonding, these columns are designed for selective and reliable HPLC applications.

Ultra™ Quat and Carbamate are application specific HPLC columns for the analysis of quaternary amines and carbamates, respectively.

Product Line

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Technical Data

Phase-Name	Modification	Particle Size	Pore Size	End-capping	C-Content	USP	Surface	pH-Range	Tmax
Ultra™ C18	C₁₈	3, 5 µm	100 Å	+	20%	L1	300 m²/g	2.5‒8.0	80 °C
Ultra™ Aqueous C18	C₁₈	3, 5 µm	100 Å	-	15%	L1	300 m²/g	2.5‒8.0	80 °C
Ultra™ C8	C₈	3, 5 µm	100 Å	+	12%	L7	300 m²/g	2.5‒8.0	80 °C
Ultra™ C4	C₄	3, 5 µm	100 Å	+	9%	L26	300 m²/g	2.5‒8.0	80 °C
Ultra™ C1	C₁	3, 5 µm	100 Å	+	5%	L13	300 m²/g	2.5‒8.0	80 °C
Ultra™ Biphenyl	Biphenyl	3, 5 µm	100 Å	+	15%	L11	300 m²/g	2.5‒8.0	80 °C
Ultra™ Aromax	Phenyl	3, 5 µm	100 Å	+	17%	L11	300 m²/g	2.5‒8.0	80 °C
Ultra™ Cyano	Cyanopropyl	3, 5 µm	100 Å	+	8%	L10	300 m²/g	2.5‒8.0	80 °C
Ultra™ Amino	Aminopropyl	3, 5 µm	100 Å	-	2%	L8	300 m²/g	2.5‒8.0	80 °C
Ultra™ PFP Propyl	Pentafluorophenylpropyl	3, 5 µm	100 Å	+	11%	L43	300 m²/g	2.5‒8.0	80 °C
Ultra™ IBD	Polar embedded Alkyl	3, 5 µm	100 Å	-	12%	L68	300 m²/g	2.5‒8.0	80 °C
Ultra™ Carbamate	N/A	3, 5 µm	100 Å	N/A	N/A	N/A	300 m²/g	2.5‒8.0	80 °C
Ultra™ Quat	N/A	3, 5 µm	100 Å	N/A	N/A	N/A	300 m²/g	2.5‒8.0	80 °C
Ultra™ Silica	-	3, 5 µm	100 Å	-	-	L3	300 m²/g	2.5‒8.0	80 °C

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