Used Lab Glass Inc 50/30 Ball Joint 10-Plate Silver Vacuum-Jacketed Oldershaw Distillation Column

1-Inch ID Borosilicate Glass Fractional Distillation Column | 10 Theoretical Stages | Spherical Joints

• Manufacturer: Lab Glass Inc.

• Condition: Used (Fully Inspected)

• Plate Count: 10 Theoretical Stages

• Joint Configuration: 50/30 Top and Bottom Spherical Ball Joints

• Thermal Protection: Silvered Vacuum Jacket with Corrugated Expansion Bellows

Overview

Achieve unparalleled separation efficiency with the added mechanical flexibility of spherical joints. The Used Lab Glass Inc. 10-Plate Oldershaw Distillation Column is a premium, laboratory-scale fractional distillation apparatus designed for the precise separation of complex chemical mixtures based on exact boiling point differences.

Constructed from heavy-wall borosilicate glass, this column features a series of meticulously engineered perforated plates (trays) and downcomers. Each plate acts as an individual theoretical stage, maximizing vapor-liquid contact to ensure exceptional fractionation efficiency. Unique to this model is the inclusion of 50/30 spherical ball joints, which provide superior vacuum seals and allow for slight angular deflection, greatly reducing mechanical stress in rigid, complex glassware assemblies.

Master Technical Specifications

Core Engineering Advantages

50/30 Spherical Ball Joints (Stress-Free Assembly)

Unlike standard taper joints, the 50/30 ball joints on this column allow for slight rotational and angular adjustments during assembly. This flexibility is critical when building large, complex distillation trains, as it eliminates the rigid mechanical stress that often leads to glass fracturing. Furthermore, when paired with appropriate O-rings and pinch clamps, spherical joints provide exceptional, grease-free vacuum integrity.

10 Theoretical Stages for Sharp Fractionation

The internal architecture relies on the proven Oldershaw design. Each of the 10 perforated plates functions as a discrete theoretical stage. As ascending hot vapors interact with the descending liquid reflux across these plates, vapor-liquid contact is maximized. This yields exceptionally high-purity distillate fractions that standard Vigreux or packed columns cannot match per unit length.

Silvered Vacuum Jacket for Near Adiabatic Stability

Maintaining a stable internal temperature gradient is critical for accurate fractional distillation. This column features a deep vacuum jacket combined with a specialized silver coating. The primary function of this silvering is to drastically reduce heat transfer by thermal radiation. By reflecting radiant heat back into the column, it prevents ambient temperature fluctuations from disrupting the delicate internal vapor liquid equilibrium.

Corrugated Expansion Bellows

Subjecting vacuum jacketed glassware to high thermal gradients can cause stress fracturing due to differential expansion rates between the inner heated column and the cooler outer jacket. Lab Glass Inc. engineered this column with corrugated expansion bellows integrated into the outer jacket, absorbing this thermal expansion and ensuring a long service life during high-temperature cycling.

Typical Laboratory Applications

This 10-plate Oldershaw column is well-suited for high-precision workflows requiring flexible assembly:

• High-Vacuum Distillation: Utilizing the 50/30 ball joints for grease free, ultra tight vacuum seals.

• Solvent Purification & Recovery: Reclaiming high purity solvents from reaction mixtures.

• Complex Apparatus Integration: Building distillation trains that require angular deflection to fit within specific fume hood constraints.

• Petrochemical Fractionation: Boiling point analysis and precise fuel cut separations.

• Specialty Chemical R&D: Purifying active intermediates and volatile reagents.

Complete Your Chemical Processing Workflow

Integrating this specialized ball-joint column into your process is seamless. To build a highly efficient, comprehensive chemical separation workflow, HiTechTrader provides a wide array of compatible laboratory infrastructure.

Browse our selection of used laboratory equipment for matching 50/30 boiling flasks, condensers, and spherical joint clamps. Secure precise fluid transfer with our precision laboratory pumps, and ensure maximum facility safety with our containment and safety equipment.

For larger-scale synthesis and automated setups, pair this column with our extensive inventory of chemical processing equipment, including high-pressure laboratory reactors and pilot-scale Parr reactors. Finally, validate the absolute purity of your distillate fractions using our robust analytical instruments, featuring top-tier used GC-MS systems.

Buy the Used Lab Glass Inc. Ball Joint Oldershaw Column

HiTechTrader offers this used Lab Glass Inc. 50/30 Ball Joint 10-Plate Silver Vacuum Jacketed Oldershaw Distillation Column for laboratories requiring uncompromising separation efficiency and the flexible assembly of spherical joints at a fraction of the cost of new glassware.

Contact HiTechTrader today to:

• Learn about our current special sales and request formal pricing.

• Discuss compatible 50/30 distillation accessories, flasks, and clamps.

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

FAQs

What is an Oldershaw distillation column?

An Oldershaw column is a highly efficient, laboratory-scale fractional distillation apparatus constructed from borosilicate glass. It features a series of internal perforated plates (trays) and downcomers. Each plate acts as an individual theoretical stage, maximizing vapor-liquid contact to precisely separate complex chemical mixtures based on exact boiling point differences.

Why does a vacuum-jacketed Oldershaw column have a silver coating?

The silver coating on a vacuum-jacketed Oldershaw column serves primarily to reduce heat transfer by thermal radiation. While the vacuum jacket prevents heat loss through conduction and convection, the reflective silver layer acts as a thermal mirror. This ensures the column operates under stable, near-adiabatic conditions, which is essential for accurate, reproducible fractional distillation.

What is the advantage of 50/30 ball joints on a distillation column?

Unlike standard taper joints which are rigid, 50/30 spherical ball joints allow for slight angular deflection and rotation during assembly. This reduces mechanical stress on the borosilicate glass, preventing fractures in complex setups, and provides an exceptionally reliable seal for high-vacuum distillations when paired with an O-ring and pinch clamp.