ZHONGKEHUIFEN Capillary Column Series
| Brand | ZHONGKEHUIFEN |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (PRC) |
| Model Series | Capillary Column Series |
| Pricing | Available Upon Request |
Overview
The ZHONGKEHUIFEN Capillary Column Series comprises high-performance fused-silica capillary columns engineered for gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS) applications. These columns utilize chemically bonded stationary phases with precisely controlled film thicknesses and internal diameters to deliver superior resolution, peak symmetry, thermal stability, and inertness across a wide temperature range. Each column is manufactured under strict quality control protocols to ensure batch-to-batch reproducibility—a critical requirement for method transfer, regulatory compliance, and long-term method robustness in QC laboratories and research environments.
Key Features
- Fused-silica tubing with low bleed and high thermal stability (up to 325 °C for standard columns; up to 360 °C for select high-temperature variants)
- Uniform wall thickness and precise inner diameter tolerance (±0.02 µm), ensuring consistent flow dynamics and retention time repeatability
- Chemically bonded and cross-linked stationary phases—including polydimethylsiloxane (PDMS), 5% phenyl methylpolysiloxane, polyethylene glycol (PEG), and specialized polar or mid-polarity phases—to support diverse analyte polarity profiles
- Deactivated inner surface via silanization and acid-washing processes, minimizing active site interactions and tailing for basic, acidic, or labile compounds
- Available in standard lengths (15 m, 30 m, 60 m) and internal diameters (0.18 mm, 0.25 mm, 0.32 mm, 0.53 mm), with film thickness options ranging from 0.10 µm to 5.0 µm
- Individually tested and certified with chromatographic performance reports including efficiency (N/m), asymmetry factor (As), and bleed profile at maximum operating temperature
Sample Compatibility & Compliance
The ZHONGKEHUIFEN Capillary Column Series supports analysis of volatile and semi-volatile organic compounds (VOCs/SVOCs), residual solvents, hydrocarbons, pesticides, environmental pollutants (e.g., PAHs, PCBs), flavors and fragrances, and pharmaceutical impurities. Columns are compatible with all major GC and GC–MS platforms—including Agilent, Thermo Fisher Scientific, Shimadzu, and PerkinElmer systems—via standard ferrule-based inlet connections. All columns meet baseline requirements for ISO/IEC 17025-accredited laboratories and are suitable for methods aligned with ASTM D3612, USP , EPA Methods 8260/8270/624/625, and ICH Q2(R2) validation guidelines. Traceable lot documentation and QC certificates support GLP/GMP audit readiness.
Software & Data Management
While capillary columns themselves are passive consumables, their performance integration into analytical workflows is optimized through compatibility with instrument control software (e.g., OpenLab CDS, Chromeleon, MassHunter, GCMSsolution). Column dimensions and phase chemistry are directly configurable in method files to enable accurate retention time prediction, linear velocity calculation, and pressure/flow optimization. ZHONGKEHUIFEN provides downloadable column databases compatible with common retention index libraries (e.g., NIST, Wiley), facilitating compound identification and method development. Batch-specific performance data can be archived alongside raw data files to satisfy FDA 21 CFR Part 11 requirements for electronic records and audit trails.
Applications
- Residual solvent analysis in pharmaceutical APIs and excipients per ICH Q3C guidelines
- Environmental monitoring of chlorinated hydrocarbons, organophosphates, and endocrine-disrupting compounds in soil and water matrices
- Food safety testing for pesticide multiresidue screening and mycotoxin profiling
- Petrochemical fingerprinting and hydrocarbon group-type analysis (HTA) using PLOT or porous-layer open-tubular columns
- Forensic toxicology screening for drugs of abuse and metabolites in biological fluids
- Essential oil composition profiling and chiral separation using cyclodextrin-based stationary phases (available upon request)
FAQ
Are these columns compatible with both split and splitless injection modes?
Yes—optimized for use with standard GC injectors operating in split, splitless, on-column, or cool-on-column (COC) modes.
Do you provide custom column configurations (e.g., non-standard length or film thickness)?
Custom winding and phase coating services are available for qualified OEM and contract laboratory partners under NDA.
What documentation accompanies each column shipment?
Each column includes a Certificate of Conformance, batch-specific chromatographic test report, and handling/storage instructions compliant with ISO 8573-1 clean air standards.
How should columns be conditioned prior to first use?
Conditioning protocols—temperature ramp rate, final hold time, and carrier gas flow—are phase-specific and provided in the included technical datasheet.
Is technical support available for method development or troubleshooting?
Application specialists offer remote consultation for column selection, method optimization, and retention behavior interpretation—free of charge for registered users.
