JIZHOU JZ-Series Oligonucleotide Synthesis Columns

Overview

The JIZHOU JZ-Series Oligonucleotide Synthesis Columns are precision-engineered fixed-volume reaction vessels designed for solid-phase synthesis of DNA and RNA oligonucleotides using standard phosphoramidite chemistry. Constructed from biocompatible, corrosion-resistant ASTM F138-certified 316L stainless steel, each column integrates a sintered metal frit filter and dual elastomeric sealing system to ensure leak-tight operation under repeated reagent pulsing, vacuum evacuation, and inert gas purging cycles. Unlike disposable plastic columns, the JZ-Series offers full chemical compatibility with acetonitrile, dichloromethane, pyridine, triethylamine, and oxidizing agents such as iodine/water/pyridine—enabling consistent coupling efficiency across multi-step syntheses without column degradation or leaching. These columns are intended for integration into both benchtop and automated DNA synthesizers operating under standard ANSI/SLAS microplate footprint constraints, supporting scalable synthesis from nanomole to micromole scale.

Key Features

• ASTM F138 316L stainless steel construction ensures long-term dimensional stability and resistance to halogenated solvents and acidic cleavage reagents (e.g., trifluoroacetic acid)
• Electropolished internal surface finish (Ra ≤ 0.4 µm) minimizes nonspecific adsorption and facilitates complete resin packing and solvent drainage
• Integrated sintered metal frit (5–10 µm nominal pore size) provides uniform flow distribution and mechanical retention of controlled-pore glass (CPG) or polystyrene support resins
• Dual Viton®/FKM O-ring sealing system rated for continuous operation at ≤10 bar pressure and −20 °C to +60 °C temperature range
• Five standardized volume options (1.2 mL to 48 mL) with traceable dimensional tolerances (±0.1 mm diameter, ±0.2 mm height) for reproducible resin loading and solvent residence time control
• Column bodies feature laser-etched alphanumeric identifiers (e.g., “JZ-1003”) and ISO 7010-compliant hazard labeling for GLP-compliant lab documentation

Sample Compatibility & Compliance

The JZ-Series columns are validated for use with common solid supports including 500 Å and 1000 Å pore-size CPG, macroporous polystyrene (MPPS), and universal solid-phase carriers used in standard 4-step phosphoramidite coupling protocols. They comply with ISO 13485:2016 requirements for manufacturing controls applicable to life science consumables and meet material biocompatibility criteria per ISO 10993-5 (cytotoxicity) and ISO 10993-12 (sample preparation for biological testing). While not classified as medical devices, their design aligns with FDA-recommended controls for oligonucleotide synthesis hardware under current Good Manufacturing Practice (cGMP) guidance for antisense and siRNA therapeutics (FDA Guidance for Industry, 2022). Each batch undergoes helium leak testing and residual solvent analysis (GC-FID) prior to release.

Software & Data Management

As passive hardware components, JZ-Series columns do not incorporate embedded electronics or firmware. However, they are fully compatible with instrument data management systems that log column usage history—including synthesis run ID, resin lot number, cycle count, and maintenance intervals—as required under 21 CFR Part 11 Annex 11 compliance frameworks. Column dimensions and volume specifications are preloaded in major synthesizer control software (e.g., GE Cytiva OligoPur, BioAutomation MerMade, and PolyGen PS-1 platforms) to auto-calculate reagent delivery volumes and dwell times. Traceability is supported via serialized QR codes on packaging labels linked to CoA (Certificate of Analysis) and CoC (Certificate of Conformance) documents available through JIZHOU’s secure customer portal.

Applications

• Solid-phase synthesis of research-grade DNA/RNA oligos (15–120 nt) for PCR primers, probes, CRISPR gRNAs, and aptamers
• Scale-up synthesis of modified oligonucleotides (e.g., LNA, 2′-O-methyl, phosphorothioate backbones) requiring extended exposure to aggressive deblocking and capping reagents
• Process development and tech transfer for GMP oligonucleotide manufacturing, where column-to-column reproducibility directly impacts yield consistency and impurity profiles
• Academic core facility deployment where cost-per-synthesis and column lifetime are critical operational metrics
• Integration into custom-built synthesizers requiring modular, high-pressure-compatible reaction vessels with standardized mounting interfaces

FAQ

Are these columns compatible with automated DNA synthesizers from major OEMs?
Yes—JZ-Series columns conform to ANSI/SLAS-4-2004 dimensional standards and interface with common column holder mechanisms used in instruments from ABI, Dr. Bello, and Biolytic Lab Performance platforms.
What is the recommended maximum synthesis scale per column volume?
Based on industry-standard resin loading densities (e.g., 0.05–0.2 µmol/g CPG), the 1.2 mL column supports up to 200 nmol synthesis; the 48 mL column supports up to 10 µmol, assuming uniform packing and flow dynamics.
Can columns be reused after cleavage and deprotection?
No—these are single-use, fixed-volume reaction vessels. Reuse is not recommended due to irreversible resin swelling, frit fouling, and potential metal ion leaching after exposure to TFA/NH₄OH.
Do you provide validation reports for GMP environments?
Upon request, JIZHOU supplies batch-specific test reports including helium leak integrity data, extractables profiling (per USP <661.2>), and dimensional metrology certificates traceable to NIM (National Institute of Metrology, China).