Elite HPLC Analytical Columns, SEC Columns, Guard Columns, Semi-Preparative & Preparative Columns

Overview

Elite HPLC analytical columns, size-exclusion chromatography (SEC) columns, guard columns, and semi-preparative/preparative columns are engineered for precision, reproducibility, and long-term stability in liquid chromatography applications. Designed and manufactured by Dalian Elite Analytical Instrument Co., Ltd.—a pioneer in commercialized chromatographic column production in China—these columns leverage decades of experience in stationary phase development, packing technology, and quality-controlled manufacturing. All columns operate on well-established chromatographic separation principles: reversed-phase (C18, C8, phenyl, etc.), hydrophilic interaction (HILIC), ion exchange (IEX), and size-exclusion mechanisms—each optimized for specific analyte classes including small molecules, peptides, proteins, polymers, and natural products. The columns are compatible with standard high-performance liquid chromatography (HPLC), ultra-high-performance liquid chromatography (UHPLC), and preparative LC systems operating at pressures up to 600 bar (depending on column dimensions and hardware configuration).

Key Features

• Manufactured under ISO 9001-certified quality management system with full traceability from raw material sourcing to final release testing.
• Rigorous batch-to-batch consistency ensured via standardized slurry packing, end-fitting assembly, and post-packing performance validation using reference standards (e.g., USP L1/L3/L7/L10 test mixtures).
• Guard column cartridges available in matching chemistries and dimensions to extend main column lifetime and protect against particulate fouling or strongly retained contaminants.
• Semi-preparative (e.g., 10 mm ID) and preparative (e.g., 21 mm, 30 mm ID) columns built with reinforced stainless-steel hardware and high-loading capacity beds for scalable purification workflows.
• SEC columns packed with cross-linked silica or polymer-based matrices (e.g., TSK-GEL, PLgel) calibrated against narrow-distribution polystyrene standards per ISO 16014 and ASTM D5296 guidelines.
• Comprehensive documentation provided per batch—including retention time reproducibility data, backpressure profiles, and asymmetry factor (As) measurements—for GLP/GMP-aligned environments.

Sample Compatibility & Compliance

These columns support a broad range of sample matrices including pharmaceutical actives, biologics (mAbs, ADCs, fragments), synthetic polymers, food additives, environmental extracts, and clinical biofluids. Reversed-phase columns exhibit compatibility with aqueous–organic mobile phases (e.g., water/acetonitrile or water/methanol gradients), while SEC columns accommodate aqueous or organic eluents depending on matrix solubility. All columns comply with general requirements outlined in ICH Q5, USP , and EP 2.2.46 for chromatographic system suitability. Column hardware meets ISO 8503-1 surface roughness specifications for stainless-steel tubing, and frit porosity is validated per ASTM F316 for consistent flow distribution and minimal channeling.

Software & Data Management

While the columns themselves are hardware components, Elite provides application support packages—including method transfer templates, column equivalency guides, and QC checklists—that integrate seamlessly into chromatography data systems (CDS) such as Waters Empower, Thermo Chromeleon, Agilent OpenLab CDS, and Shimadzu LabSolutions. Each column lot includes a Certificate of Analysis (CoA) with batch-specific parameters (e.g., plate count N ≥ 8,000/m, k’ = 2.5–3.5 for caffeine on C18, tailing factor T ≤ 1.5). Audit trail functionality for column usage history is supported through CDS-based column tracking modules compliant with FDA 21 CFR Part 11 requirements when deployed in regulated laboratories.

Applications

• Pharmaceutical QC/QA: Assay, related substances, residual solvent analysis, and stability-indicating methods per ICH Q2(R2).
• Biopharmaceutical characterization: Monoclonal antibody aggregation analysis (SEC-HPLC), charge variant profiling (IEX), and glycan mapping (HILIC).
• Materials science: Molecular weight distribution (MWD) determination of synthetic polymers using SEC columns calibrated per ISO 16014-4.
• Natural product isolation: Fractionation of plant extracts and marine metabolites using semi-preparative and preparative reversed-phase or normal-phase columns.
• Food & beverage testing: Pesticide residue screening, mycotoxin quantification, and vitamin profiling in complex food matrices.

FAQ

Are Elite columns compatible with UHPLC systems?
Yes—columns with internal diameters ≤ 3.0 mm and particle sizes ≤ 2.7 µm are rated for use up to 1000 bar; pressure limits are specified per model in the technical datasheet.
Do you provide column regeneration protocols?
Standard cleaning procedures for common chemistries (e.g., C18, silica) are included in the user manual; customized protocols for challenging samples are available upon technical consultation.
What is the typical shelf life of an unopened column?
When stored at room temperature in original packaging with end-caps sealed, shelf life is 24 months from manufacture date; expiration is printed on the label.
Can Elite columns be used under GMP conditions?
Yes—full documentation packages (CoA, CoO, validation support files) and change control records are available for audit readiness in regulated environments.
Is method transfer support offered for switching from competitor columns?
Yes—Elite offers comparative performance reports and method adjustment guidance based on column parameter equivalency (e.g., k’, α, N) aligned with USP General Chapter .