Used 40-Plate Silver Vacuum Jacketed Oldershaw Distillation Column

High-Resolution 51-Inch Borosilicate Column | 40 Theoretical Stages | 1-Inch ID

• Condition: Used (Fully Inspected & Vacuum Tested)

• Plate Count: 40 Theoretical Stages (1-Inch Spacing)

• Scale: 51 Inches (1295.4 mm) Overall Length

• Joint Configuration: 29/42 Standard Taper Top and Bottom

• Thermal Protection: Silver-Coated Vacuum Jacket with Corrugated Expansion Bellows

Technical Overview: Ultimate High Resolution Fractionation

When the scientific community encounters liquid mixtures containing chemical components with nearly identical boiling points, standard packed columns and shorter fractionating arrays simply cannot resolve the cut. The Used 40-Plate Silver Vacuum Jacketed Oldershaw Distillation Column is a towering, ultra high efficiency apparatus engineered specifically to conquer the most difficult separations in advanced chemistry.

Standing at a commanding 51 inches (1295.4 mm) in length, this premium borosilicate glass column houses an incredibly dense internal architecture. It features 40 individual perforated plates (trays) and downcomers, spaced exactly one inch apart. Each plate acts as an individual theoretical stage. As rising vapor is repeatedly forced through descending liquid reflux across 40 successive levels, vapor-liquid contact is maximized to an extreme degree. Fully insulated by a silver-coated vacuum jacket and protected by expansion bellows, this pre-owned giant delivers industrial-grade purity within a laboratory footprint.

Master Technical Specifications

Core Engineering & Design Advantages

Massive 40-Stage Separation Power

The defining characteristic of this column is its extraordinary 40-plate density. In fractional distillation, the number of theoretical stages directly correlates to the ability to separate closely boiling compounds. With 40 discrete vaporization-condensation cycles occurring within a single vertical pass, chemists can sharply isolate structural isomers, complex petrochemicals, and delicate natural products that would otherwise co-distill in a 10- or 20-plate column.

Near-Adiabatic Stability via Silvered Jacketing

For a column standing 51 inches tall, thermal loss is catastrophic. If the vapor cools and condenses prematurely before reaching the distillation head, the critical reflux ratio collapses. To prevent this, the 2.5-inch outer jacket is evacuated to completely eliminate conductive heat loss. Furthermore, the silver coating on a vacuum jacketed Oldershaw column is there primarily to reduce heat transfer by radiation. By functioning as an inward-facing thermal mirror, the silvering guarantees the entire 51-inch vertical gradient maintains stable, near-adiabatic conditions.

Corrugated Expansion Bellows for Extreme Lengths

Subjecting a 51-inch internal glass tube to high-temperature vapor causes substantial linear thermal expansion. Because the outer silvered vacuum jacket remains insulated from this heat, the difference in expansion rates would normally shatter the glass welds. This apparatus is engineered with corrugated expansion bellows integrated into the outer jacket. These borosilicate folds physically flex and compress, acting as a mandatory mechanical shock absorber during intense, prolonged distillation cycles.

Universal 29/42 Standard Taper Integration

Despite its monumental height, this column is built for seamless laboratory integration. Outfitted with standard 29/42 ground glass taper joints at both the top and bottom, it mates effortlessly with ubiquitous 29/42 boiling flasks, reflux splitters, and condenser heads without the need for custom or fragile adapters.

Ideal Applications within the Scientific Community

This 40-plate column is an indispensable tool for advanced research facilities, analytical laboratories, and process engineering labs:

• Isomer Separation: Isolating active compounds with boiling point differentials of just 1 to 2 degrees Celsius.

• Petrochemical Characterization: Performing highly specific hydrocarbon cuts and deep boiling-point evaluations for fuel research.

• High-Purity API Refinement: Achieving absolute purity in pharmaceutical intermediates prior to crystallization workflows.

• Specialty Chemical R&D: Purifying highly complex synthetic mixtures requiring extreme theoretical stage counts.

Complete Your High Resolution Distillation Train

A column of this magnitude requires highly stable, precision controlled laboratory infrastructure. Source compatible equipment through HiTechTrader to build out your high efficiency chemical processing stack:

• Standard 29/42 Glassware: Support this massive column safely with heavy-wall 29/42 receiving flasks and distillation heads from our extensive used laboratory equipment inventory.

• Precision Vacuum & Fluid Control: Maintain exact system pressures to lower boiling points using our robust laboratory pumps.

• Advanced Synthesis: Feed this massive separation stage directly from high-pressure laboratory reactors or pilot-scale Parr reactors.

• Purity Verification: Validate the absolute success of your 40-stage separation using top-tier analytical instruments, including fully refurbished used GC-MS systems.

• Operator Safety: Secure this 51-inch high-temperature setup using appropriate structural containment and safety equipment.

• Scientific Discoveries: Stay informed on the latest breakthroughs and methodologies impacting the scientific community by checking out HTT Magazine.

Buy the Used 40-Plate Oldershaw Distillation Column

HiTechTrader offers this Used 40-Plate Silver Vacuum Jacketed Oldershaw Distillation Column fully inspected for structural integrity, plate perfection, and vacuum seal quality. Acquire immense fractional separation power without the staggering capital costs or multi-month lead times of commissioning custom new glassware.

Contact HiTechTrader today to:

• Request formal pricing, verify glass condition, or source additional laboratory glassware and chemical processing equipment for your setup.

• Verify proper 29/42 structural clamping and support compatibility.

• Arrange secure, custom crated domestic or international freight shipping for this oversized glass component.

FAQs

What is a 40-plate Oldershaw distillation column?

A 40-plate Oldershaw column is a towering, high-efficiency laboratory-scale fractional distillation apparatus constructed from borosilicate glass. It features an internal series of 40 perforated plates (trays) and downcomers. Each plate acts as an individual theoretical stage, maximizing vapor-liquid contact. With 40 consecutive stages, this column provides extreme separation power, allowing chemists to precisely isolate chemical mixtures with nearly identical boiling points.

Why does a 51-inch Oldershaw column need a silver vacuum jacket and expansion bellows?

In exceptionally tall fractionating columns, maintaining internal temperature is critical for operation. The silver coating on a vacuum-jacketed Oldershaw column is applied primarily to reduce heat transfer by thermal radiation, working alongside the vacuum layer to prevent premature vapor condensation. Because the 51-inch heated inner tube expands at a significantly different rate than the cooler outer jacket, corrugated expansion bellows are integrated into the glass to physically flex and absorb the resulting thermal stress, preventing the apparatus from shattering.