5 Plate Silver Vacuum Jacketed Oldershaw Distillation Column

Used 35/25 Silver Vacuum Jacketed Oldershaw Distillation Column

1-Inch ID Borosilicate Glass Fractional Distillation Column | 5 Theoretical Stages | Spherical Joints

• Product Type: Fractional Oldershaw Distillation Column

• Condition: Used (Fully Inspected)

• Plate Count: 5 Theoretical Stages (Perforated Trays & Downcomers)

• Joint Configuration: 35/25 Top and 35/25 Bottom Spherical Ball Joints

• Thermal Protection: Silvered Vacuum Jacket with Corrugated Expansion Bellows

• Footprint: 12.5 Inches (317.5 mm) Overall Length

Overview

Optimize your laboratory’s chemical separation capabilities with high-efficiency fractionation in a compact, stress-relieved format. The Used 35/25 Silver Vacuum Jacketed Oldershaw Distillation Column is a specialized, laboratory-scale apparatus engineered for the precise separation of liquid mixtures based on close boiling point differences.

Constructed from heavy-wall borosilicate glass, this column features a series of internal perforated plates (trays) and downcomers. Each plate functions as an individual theoretical separation stage, maximizing vapor-liquid contact as ascending vapor bubbles repeatedly through the descending liquid reflux. Designed with a compact 12.5-inch footprint, this 5-stage column delivers superior separation performance compared to simple distillation setups, without the height constraints of standard 10-plate models. Protected by a silvered vacuum jacket and equipped with flexible 35/25 spherical ball joints, it ensures absolute thermal stability and easy, stress-free mechanical integration.

Master Technical Specifications

Core Engineering Advantages

5-Plate Oldershaw Fractional Design

The Oldershaw tray architecture provides discrete theoretical equilibrium stages to dramatically improve vapor-liquid contact. The 5-plate configuration is ideal for achieving precise component separation, solvent purification, and fraction purity when a basic short-path or simple distillation apparatus falls short.

Silvered Vacuum Jacket for Near-Adiabatic Stability

Thermal stability dictates separation quality during fractional distillation. This column features a deep vacuum jacket treated with a specialized reflective silver coating. While the vacuum layer eliminates conductive heat loss, the silver coating functions primarily to reduce heat transfer by thermal radiation. This near-adiabatic thermal isolation prevents ambient laboratory temperatures from disrupting the delicate internal vapor-liquid equilibrium, yielding highly repeatable distillation runs.

35/25 Spherical Ball Joints (Flexible Alignment)

Rigid standard taper joints often introduce dangerous mechanical strain in complex or custom distillation assemblies. The integration of 35/25 spherical ball joints at both the top and bottom of this column allows for slight angular deflection and rotational flexibility during setup. This drastically reduces glass stress, accommodating slight alignment differences between your flasks, condensers, and receiving adapters.

Corrugated Expansion Bellows (Thermal Stress Relief)

High thermal gradients can cause catastrophic fracturing in vacuum jacketed glassware due to differential expansion rates. This column incorporates a corrugated vacuum jacket (expansion bellows). These flexible accordion-like sections safely absorb the linear expansion and contraction of the glass during rapid heating and cooling cycles, ensuring superior durability and long-term usability.

Typical Laboratory Applications

This compact, 12.5-inch column is an exceptional fit for specialized chemical processing workflows, including:

• Solvent Purification: Reclaiming high-purity solvents from reaction waste.

• Fractional Distillation: Separating complex chemical mixtures based on exact boiling points.

• Petrochemical Analysis: Fractionating hydrocarbon cuts and testing petroleum samples.

• Pharmaceutical R&D: Isolating volatile active intermediates and purifying synthetic reaction products.

• Essential Oil Refinement: Separating delicate natural extracts with precise thermal control.

• Laboratory-Scale Process Optimization: Supporting organic chemistry method development in height-restricted fume hoods.

Complete Your Chemical Processing Workflow

Integrating this 5-stage column into your custom distillation train is seamless. To build a comprehensive, high-efficiency chemical separation system, HiTechTrader provides a vast inventory of compatible laboratory infrastructure.

Explore our used laboratory equipment for matching 35/25 boiling flasks, distillation heads, receiving adapters, and pinch clamps. Maintain continuous liquid feed and precise vacuum pressures with our laboratory pumps, and ensure facility compliance with our containment and safety equipment.

For advanced synthesis, pair this column directly with high-pressure laboratory reactors or pilot-scale Parr reactors. Validate your refined fractions using our high-precision analytical instruments, featuring top-tier used GC-MS systems.

Buy the Used 35/25 Silver Vacuum Jacketed Oldershaw Column

HiTechTrader offers this Used 35/25 Silver Vacuum Jacketed Oldershaw Distillation Column to laboratories seeking specialty fractional distillation glassware at a highly cost-effective price point, completely bypassing new-glassware lead times.

Contact HiTechTrader today to:

• Request official pricing and confirm specs.

• Verify 35/25 ball joint clamp compatibility.

• Arrange for secure, heavily padded domestic or international freight shipping.

FAQs

What is an Oldershaw distillation column?

An Oldershaw distillation column is a highly efficient, laboratory-scale fractional distillation apparatus that utilizes internal perforated plates and downcomers to create multiple theoretical stages. Each stage maximizes vapor-liquid contact, allowing complex liquid mixtures to be separated precisely based on their boiling points. A silver vacuum jacketed Oldershaw column further enhances this process by utilizing a reflective silver coating to reduce radiant heat transfer, maintaining stable, near-adiabatic internal conditions for highly repeatable solvent purification and chemical separation.