Tosoh TSKgel Chromatography Columns (Distributed by Elite Instrument Co., Ltd.)

Overview

The Tosoh TSKgel family of high-performance liquid chromatography (HPLC) and ultra-high-performance liquid chromatography (UHPLC) columns represents a globally recognized standard in separation science. Engineered for precision, reproducibility, and long-term stability, these silica- or polymer-based stationary phases are manufactured in Japan under strict ISO 9001-certified quality systems. Each column is designed around well-characterized chemistries—including reversed-phase (C18, C8), normal-phase (silica, NH₂), ion-exchange (DEAE, SP), size-exclusion (G-series, Super-series), hydrophilic interaction (amide), and chiral (Etio)—to address the physicochemical diversity of analytes across pharmaceutical, biopharmaceutical, food safety, environmental monitoring, and polymer research applications. The TSKgel platform leverages decades of Tosoh Corporation’s expertise in macromolecular characterization and surface chemistry, delivering consistent retention behavior, low batch-to-batch variability, and robust performance under gradient and isocratic elution conditions.

Key Features

• Wide portfolio of column chemistries optimized for specific analyte classes—ranging from small-molecule APIs to monoclonal antibodies and synthetic polymers.
• Two distinct silica matrix architectures: high-purity, low-metal-content silica for acidic/basic compound stability; and rigid, cross-linked polymer gels for extreme pH tolerance (pH 1–14) and organic solvent compatibility.
• UHPLC-ready formats available with sub-2 µm particles (e.g., Super-ODS, Super-SW series), engineered for high efficiency (>150,000 plates/m) and low backpressure at flow rates up to 1.0 mL/min on standard systems.
• Guard column options (TSKgel Guard) with matched packing material ensure extended analytical column lifetime and reduced system contamination without compromising resolution.
• All columns undergo rigorous QC testing—including pressure drop verification, asymmetry factor (As) measurement, and retention time reproducibility assessment—per internal Tosoh specifications aligned with ICH Q5A and USP .

Sample Compatibility & Compliance

TSKgel columns support diverse sample matrices including biological fluids (serum, plasma), fermentation broths, environmental extracts (soil/water), food homogenates, and synthetic reaction mixtures. Their chemistries comply with regulatory requirements for method validation in GLP and GMP environments. Reversed-phase columns meet USP L1 (C18) and L7 (C8) designations; SEC columns conform to USP L22 (polymer-based) and L3 (silica-based) classifications. Ion-exchange variants support ICH Q5B charge variant analysis, while chiral columns (Etio series) are validated for enantiomeric purity determination per USP . All columns are compatible with common HPLC/UHPLC platforms (Waters, Agilent, Shimadzu, Thermo Fisher) and support method transfer per ASTM D7984 guidelines.

Software & Data Management

While TSKgel columns themselves are hardware components, their integration into regulated workflows is supported through compatibility with chromatography data systems (CDS) compliant with FDA 21 CFR Part 11, including Waters Empower, Agilent OpenLab CDS, and Thermo Chromeleon. Column lot traceability is maintained via serialized labeling and electronic Certificates of Analysis (CoA), which include test chromatograms, retention time deviation reports, and pore size distribution data where applicable. Elite Instrument—the exclusive mainland China distributor—provides full technical documentation in English, including application notes, method development guides, and column care protocols aligned with ISO/IEC 17025 laboratory competence standards.

Applications

• Pharmaceutical QA/QC: Assay of active ingredients, related substances, residual solvents, and chiral impurities per ICH Q2(R2) and USP monographs.
• Biopharmaceutical characterization: mAb aggregation/degradation profiling (SEC), charge variant mapping (IEX), glycan release and analysis (HILIC), and peptide mapping (RP-UHPLC).
• Food & Beverage: Pesticide multiresidue screening (RP), mycotoxin quantitation (NH₂), sugar profile determination (Amide), and fatty acid methyl ester (FAME) separation (CN).
• Environmental analysis: PAHs, PCBs, and endocrine disruptors (Phenyl, ODS); anionic/cationic surfactants (DEAE, SP); and molecular weight distribution of microplastics (SEC).
• Materials science: Molecular weight and dispersity (Đ) of synthetic polymers (GPC/SEC), functional group distribution in copolymers (HILIC/RP), and monomer conversion kinetics (RP).

FAQ

Are TSKgel columns compatible with both HPLC and UHPLC systems?

Yes—columns with particle sizes ≥3 µm (e.g., ODS-120, G3000SW_XL) are optimized for conventional HPLC; sub-2 µm variants (Super-ODS, Super-SW) are rated for UHPLC pressures up to 1000 bar.
What is the recommended storage solvent for TSKgel SEC columns?

Polymer-based SEC columns (e.g., G-series) should be stored in THF or DMF; silica-based SEC columns (e.g., SW-series) require aqueous buffer or acetonitrile/water mixtures—never pure organic solvents.
Do TSKgel columns require special conditioning before first use?

Yes—reversed-phase columns require equilibration with ≥10 column volumes of mobile phase; SEC columns need ≥30 min flow stabilization at operating temperature to achieve thermal equilibrium.
Is method validation support available for regulatory submissions?

Elite Instrument provides application-specific validation packages—including system suitability test protocols, forced degradation studies, and robustness assessments—aligned with ICH Q2(R2) and WHO TRS 1019 Annex 5.
Can TSKgel columns be regenerated after fouling?

Silica-based columns tolerate aggressive cleaning (e.g., 0.1% TFA in water/acetonitrile), but polymer-based SEC columns must only be cleaned with manufacturer-recommended solvents to prevent matrix swelling or collapse.