Chromservis s.r.o. / ASTRA

ASTRA

The ASTRA series from Chromservis offers reliable chromatography columns for routine HPLC analysis. Spherical particles with a narrow particle size distribution ensure stable separation performance and high lot-to-lot reproducibility. With the ASTRA Sugar series, you also benefit from optimised HPLC analysis of sugars and oligosaccharides (carbohydrates). This makes the ASTRA series an efficient solution for consistent analysis in everyday laboratory work.

Product Line

Technical Data

Phase name	Modification	Particle size	Pore size	End-capping	C- content	USP	Surface	pH range	T_max
ASTRA C18-HE	C₁₈	2, 3, 5, 10 µm	100 Å	+	17%	L1	330 m²/g	2.0–9.0	N/A
ASTRA C18-AQ	C₁₈	2, 3, 5 µm	100 Å	End-capping with polar groups	13%	L1	330 m²/g	2.0‒9.0	N/A
ASTRA C18-BDS	C₁₈	3.5 µm	140 Å	Proprietary	11%	L1	170 m²/g	2.0–8.0	N/A
ASTRA C8-HE	C₈	5 µm	100 Å	+	11%	L7	330 m²/g	2.0–9.0	N/A
ASTRA C8-BDS	C₈	3.5 µm	140 Å	Proprietary	6%	L7	170 m²/g	2.0–8.0	N/A
ASTRA Phenyl-Hexyl-HE	Phenylhexyl	3.5 µm	100 Å	+	11%	L11	330 m²/g	2.0–7.5	N/A
ASTRA DM	Polar end group – polar embedded alkyl chain	3.5 µm	100 Å	+	12%	/	205 m²/g	2.0–9.0	N/A
ASTRA Diol	Diol	3.5 µm	100 Å	-	5%	L20	330 m²/g	2.0–7.5	N/A

ASTRA Sugar-series

Phase	Counterion	Particle size	USP
ASTRA Sugar Ca(S)	Ca2+	9, 10 µm	L19
ASTRA Sugar H(S)	H+	9, 10 µm	L17
ASTRA Sugar K(S)	K+	10 µm
ASTRA Sugar Na(S)	Na+	10 µm	L58

Applications

Retention time table for ASTRA Sugar phases

Analyte	Ca²⁺^a[min]	H⁺^b[min]	Na⁺^b [min]	K⁺^b [min]
Formic acid	N/A	8.74	N/A	N/A
Malic acid	N/A	N/A	N/A	N/A
Butanedioic acid (succinic acid)	N/A	N/A	N/A	N/A
Citric acid	N/A	5.64	N/A	N/A
Erythritol	9.98	N/A	N/A	N/A
Acetic acid	N/A	9.49	N/A	N/A
Ethanol	10.84	14.41	10.30	10.00
Fructose	8.52	6.58	7.37	7.78
Galactose	7.71	6.47	7.26	7.68
Glucose	7.10	6.18	6.86	7.24
Glycerol	10.05	8.59	8.18	8.01
Isopropanol	12.40	16.74	N/A	N/A
Lactose	6.38	5.43	5.76	6.01
Lactulose	7.03	N/A	N/A	N/A
Maltitol	7.74	5.60	5.81	5.82
Maltose	6.26	5.33	5.74	5.98
Mannitol	10.20	6.84	6.88	6.86
Mannose	8.09	6.48	7.30	7.92
Melezitose	5.76	N/A	5.13	5.18
Methanol	10.66	12.19	N/A	N/A
Lactic acid	N/A	8.39	N/A	N/A
Shikimic acid	N/A	N/A	N/A	N/A
Sorbitol	12.18	7.00	7.15	7.17
Sucrose	6.17	N/A	5.67	5.76
Tartaric acid	N/A	5.95	N/A	N/A
Xylitol	12.22	7.50	7.59	7.56
Xylose	7.67	6.54	7.40	7.84

Specifications:

Column dimensions	300 m × 8 mm
Mobile phase	Ultrapure water (UPW); 0.1% H₂O for H⁺
Flow rate	1.0 mL/min
Temperature	^a: 70 °C; ^b: 80 °C
Detection	Refractive index (RID) at 55 °C

Downloads

Brochures

Applications

Technical Support

First Name*

Last Name*

Company*

Email*

Telephone

Message*

I have taken note of the Privacy Policy and agree that the data I have provided will be collected and stored electronically. My data will only be used strictly for the purpose of processing and responding to my request.

Fields marked with * must be filled in