Product Information
Brand
Rezex HPLC Columns
Rezex Ion Exclusion HPLC columns offer direct selectivity for organic acids and carbohydrates. Rezex ion exclusion columns are ideal for applications such as food and beverage analysis and drug formulation testing and are available in the following phases, RAM-Carbohydrate Ag+ (8%), RCM-Monosaccharide Ca+2 (8%), RCU-USP Sugar Alcohols Ca+2 (8%), RFQ-Fast Acid H+ (8%), RHM-Monosaccharide H+ (8%) RKP-Potassium K+ (8%),RNM-Carbohydrate Na+ (8%),RNO-Oligosaccharide Na+ (4%),ROA-Organic Acid H+ (8%),RPM-Monosaccharide Pb+2 (8%), andRSO-Oligosaccharide Ag+ (4)%
Rezex HPLC Columns
Excellent Resolution and Reproducibility for Carbohydrates and Organic Acids

Rezex HPLC columns achieve reproducible, accurate separations based on multiple modes of interaction. Available in 4 and 8 cross linked sulfonated styrene divinylbenzene (and multiple ionic forms (sodium, hydrogen, potassium, lead, and silver) for a wide range of selectivities. USP L17, L19, L22, L34, and L58 packings available.

Use Rezex for carbohydrate, oligosaccharide, and organic acid separations:

  • Drug formulation and excipient analysis
  • Food and beverage quality control testing
  • Fermentation reaction monitoring and recover testing for biofuels

rezex

HPLC Column
Carbohydrate and Organic Acid Analysis
  • Excellent resolution and column to column reproducibility
  • Easy, accurate quantitation from sharper peak shapes
  • Longer column lifetimes and faster run time capability from lower backpressures
  • Baseline separation of critical sample components due to higher efficiencies

 

Rezex columns utilize different ligands. Selecting the right column will allow you to achieve the best resolution for your peaks of interest.

Column Selection Guidelines:

  • Retention time chart
  • Application examples
  • Cross reference guide

Retention Time Chart

Counter Ion Analyte RAM Ag+ RCM Ca+2 RNM Na+ RHM H+ RPM Pb2+
Adonitol (Ribitol)
11.54
14.93
11.10
11.11
20.15
D-Altrose
11.95
12.71
11.45
10.21
15.82
D-(-)-Arabinose
13.01
13.56
12.65
11.24
16.47
D-(+)-Digitoxose
11.90
13.82
11.39
12.59
15.32
Dulcitol
11.64
21.61
11.10
10.71
33.25
Meso-Erythritol
12.31
15.49
11.78
12.14
19.82
D-(-)- Fructose
12.05
13.65
11.76
10.31
17.71
L-(-)-Fucose
12.75
13.19
12.30
11.65
16.19
D-(+)-Galactose
11.87
11.73
11.47
10.19
14.94
Gentiobiose
8.70
8.40
8.40
7.87
10.53
D-(+)-Glucose
11.04
10.37
10.71
9.62
12.92
Inositol
12.59
13.35
12.14
9.98
18.87
D- Mannitol
11.36
17.82
10.80
10.59
24.90
D-(+)-Mannose
12.04
12.04
11.54
10.16
16.39
Melibiose
9.26
9.04
8.82
8.14
11.97
D-(+)-Melezitose
8.00
7.93
7.66
7.54*
9.94
D-(+)-Raffinose
8.10
8.16
7.76
7.88*
10.28
L-(+)-Rhamnose
11.50
12.18
11.00
10.90
14.47
D-(-)-Ribose
14.59
23.38
14.34
11.42
33.48
Salicin
18.51
18.58
17.36
14.98
26.81
D-Sorbitol
11.91
22.45
11.39
10.83
35.97

Application Examples + Cross Reference Guide

   
Rezex Description Applications Bio-Rad® Aminex® Supelco®
Supelcogel™
Waters®
Sugar-Pak
Transgenomic®
CARBOSep
Sepax®
Carbomix®

RCM-Monosaccharide
(L19 packing)*

8 % cross-linked
CALCIUM

  • Monosaccharides and sugar alcohols, including sorbitol and mannitol from sweeteners and corn and cane sugars
  • Class separation of di-, tri-, and tetra- saccharides

HPX-87C
125-0095

Supelcogel
Ca

Sugar-Pak 1

CARBOSep
CHO-820

Carbomix Ca

RHM-Monosaccharide
(L17 packing)*

8 % cross-linked
HYDROGEN

  • Monosaccharides in combination with organic acids, fatty acids,
    alcohols, ketones,
  • neutral compounds, or inorganic salts

HPX-87H
125-0140

Supelcogel
C-610H & H

N/A

ICSep
ION-300

Carbomix
H

RAM-Carbohydrate

8 % cross-linked
silver

  • Selectivity complementary to toher Rezex column types

N/A

N/A

N/A

N/A

N/A

RSO-Oligosaccharide

4 % cross-linked

silver

  • High resolution of oligosaccharides up to 18 degrees of
    polymerization (Dp)

HPX-42A
125-0097

Supelcogel
AG1 & AG2

N/A

N/A

N/A

RNO-Oligosaccharide

4 % cross-linked
sodium

  • High resolution of oligosaccharides

N/A

N/A

N/A

CARBOSep
COREGEL-87N

N/A

RPM-Monosaccharide
(L34 packing)*

8 % cross-linked
LEAD

  • 100 x 7.8 mm dimensions available for sugar alcohol analysis according to the USP procedure
  • Monosaccharides and sugar alcohol analysis
  • Cellobiose, glucose, xylose, arabinose, and mannose and other cellulose products

HPX-87P
125-0098

Supelcogel
Pb

N/A

CARBOSep
COREGEL-87P

Carbomix Pb

RNM-Carbohydrate

(L58 packing)*

8 % cross-linked

SODIUM

  • Analysis of mono-, di-,and tri- saccharides
  • For matrices which contain high concentration of inorganic sodium
    (i.e. molasses)

HPX-87N
125-0143

N/A

N/A

N/A

Carbomix Na

ROA-Organic Acid

(L22 packing)*

8 % cross-linked

HYDROGEN

  • Organic acids alone
  • Organic acids in combination with carbohydrates, alcohols, fatty acids, or neutral compounds
  • Ethanol, acetic acid, glycerol, and standard alcohol mixtures

  • Amino sugars

HPX-87H
125-0140

Supelcogel
C-610H & H

N/A

N/A N/A

RFQ-Fast Acid

8 % cross-linked
HYDROGEN

  • Rapid screening of fruit quality
  • Ethanol, acetic acid, glycerol and standard alcohol mixtures

Fast Acid

125-0100

N/A

N/A

N/A N/A

RKP-Potassium

8 % cross-linked
POTASSIUM

  • Analysis of glyphosate

HPX-87K
125-0142

Supelcogel
K

N/A

CARBOSep
COREGEL-87K

Carbomix
K

RCU-USP Sugar Alcohols
(L19 packing)*

8 % cross-linked
CALCIUM

  • Sugar analysis according to the USP procedures on a 250 x 4.0 mm dimension

Sugar Alcohols 125-0094

N/A

N/A

N/A

N/A