Overview
The i-Series HPLC Column represents a next-generation liquid chromatography solution engineered for demanding laboratory applications. These columns incorporate advanced surface chemistry and uniformly spherical silica particles to deliver exceptional separation performance. Manufactured under strict quality controls, they exhibit minimal void formation and superior lifetime compared to conventional columns. The product line typically includes various dimensions (e.g., 150mm × 4.6mm) and stationary phases to accommodate diverse analytical requirements.
Structure and Working Principle
Each column consists of a stainless steel housing packed with porous silica particles (3-5μm diameter) bonded with specific functional groups like octadecyl (C18). The particles feature optimized pore size (typically 100Å) for balanced analyte access and surface area. During operation, the mobile phase carries samples through the column where components separate based on differential partitioning between the stationary phase and mobile phase. The i-Series' patented end-fitting design minimizes dead volume to preserve peak integrity.
Key Features
1. **Enhanced Efficiency**: Delivers >100,000 theoretical plates per meter due to narrow particle size distribution. 2. **pH Stability**: Special bonding technology withstands pH 2-8 for method flexibility. 3. **Low Bleed**: Ultra-clean manufacturing reduces baseline noise in sensitive detection methods like MS. Notably, the columns maintain stable retention times even after hundreds of injections, critical for compliance with pharmacopeial methods. The hardware features PEEK-lined fittings to prevent metal adsorption effects.
Application Areas
**Pharmaceutical QC**: USP/EP method compliance for drug purity testing and stability studies. **Environmental Analysis**: EPA method development for pesticide residues in water samples. In biotechnology, these columns separate peptides and small proteins with minimal secondary interactions. Food laboratories utilize them for additive quantification and adulterant detection, benefiting from the columns' tolerance to complex matrices.
Maintenance and Precautions
Always prime new columns with 10-20 column volumes of starting mobile phase. For storage, flush with ≥50% organic solvent (e.g., methanol) and seal tightly. Avoid sudden pressure changes exceeding 2,000 psi/min, which can disrupt particle beds. When observing backpressure increases >10% from baseline, implement in-line filtration or replace guard columns. Never reverse-flush columns unless specified by the manufacturer.
B2B Procurement Guide
For bulk purchases (10+ units), negotiate volume discounts with manufacturers or authorized distributors. Request certificates of analysis showing column efficiency (asymmetry factor, plate count) for quality assurance. Consider total cost of ownership: premium columns may justify higher initial costs through longer service life and reduced system downtime. For regulated industries, ensure suppliers provide full documentation packages including installation qualification support.
Related Manufacturers
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