HPLC Columns


TSKgel CM-STAT columns are packed with 7 and 10 µm non-porous resin particles of which the surface consists of long hydrophilic chains of open access network of multi-layered carboxymethyl cation exchange groups. The innovative bonding chemistry, combined with a relatively large particle size, results in a respectable loading capacity, low operating pressure, and rapid analysis.

Applications for the TSKgel CM-STAT columns include the separation of proteins, protein aggregates, charge isomers of monoclonal antibodies, PEGylated proteins, and peptide digests.


P/NDescriptionParticle Size Housing MaterialID (mm)Length (cm)Price ($) 
0021966TSKgel CM-STAT7Stainless Steel4.6101,446
0021965TSKgel CM-STAT10Stainless Steel33.51,368

Product Attributes

Particle size (mean): 7 µm and 10 µm
Pore size (mean): nonporous
Functional group: carboxymethyl
Counter ion: NA+
pH stability: 3.0 - 10.0
Static binding capacity (mg lysozyme/g dry gel):

ca. 20 (7 µm)

ca. 15 (10 µm)

Small ion capacity:

100 µeq/g dry gel

pKa: 4.9








Antibody Analysis



Columns: A: TSKgel CM-STAT, 7 µm, 4.6 mm ID × 10 cm
B: ProPac WCX-10, 10 µm, 4 mm ID × 25 cm
Mobile phase: A: 20 mmol/L MES, pH 6.0
B: 20 mmol/L MES + 0.5 mol/L NaCl, pH 6.0
Gradient: A: 0 min (10% B) 15 min (30% B) 15 min (100% B) 17 min (0% B) 17 min (10% B)
21 min (10% B)
B: 0 min (10% B) 30 min (30% B) 30 min (100% B) 32 min (100% B)  32 min (10% B) 36 min (10% B)
Flow rate: A: 1.0 mL/min B: 2.0 mL/min
Detection: UV @ 280 nm
Temperature: 25 °C
Injection vol.: 20 µL
Samples: monoclonal antibodies (mAb A through E)


Separation of Charge Isomers



Columns: TSKgel CM-STAT, 7 µm,
4.6 mm ID × 10 cm

Mobile phase: A: 50 mmol/L sodium acetate buffer, pH 5.0
B: 30 mmol/L sodium acetate buffer (pH not adjusted)
Column equilibrated with mobile phase A, the sample is injected, then eluted stepwise to 100% mobile phase B
Flow rate: 1.0 mL/min
Detection: UV @ 280 nm
Temperature: 25 °C
Injection vol.:1 0 µL
Sample: purified mAb
Sample concentration: 1 g/L


For additional applications, please see our applications database.



Code #DescriptionLiterature Type
AN039 Separation of mAb Isoforms Using Controlled pH Gradients and Ion Exchange Chromatography ColumnsApplication Note
AN086 Fast Analysis Of IgG Charge Heterogeneity by Ion Exchange Chromatography Application Note
BR09 Solutions for Monoclonal Antibody Analysis and CharacterizationBrochure
DS1231 TSKgel STAT Series Cation Exchange ProductsOperating Conditions and Specifications
IM01 TSKgel Column Instruction ManualInstruction Manual
LCAT02B TSKgel U/HPLC Columns 2019 Product Guide -- CIEC ColumnsProduct Catalog
PO22 TSKgel SP-STAT and TSKgel CM-STAT columnsProduct Overview
SR109 TSKgel STAT Columns for High Performance Ion Exchange Chromatography Separation Report
TP132 High Speed and High Resolution Cation Exchange Chromatography for Biological Samples on Non-Porous PackingsTechnical Presentation
TP164 Detection of protein heterogeneity by HPLCTechnical Presentation
TP170 Separation of mAb isoforms using controlled pH gradients and AEX/CEX columns packed with 7 and 10 μm hydrophilic non-porous resin particlesTechnical Presentation
TP181 Detection of protein heterogeneity by HPLC (additional data included)Technical Presentation
TP224 Workflow Solution for the Characterization of Biosimilar using Different Modes of Analytical Chromatography TechniquesTechnical Presentation