Used 58-Inch Silver Vacuum Jacketed Oldershaw Mixing Column

Pilot-Scale 1.5-Inch ID Gravity Homogenizer | Massive 45/50 Joints | 4.8-Foot Path

• Condition: Used (Fully Inspected & Verified)

• Function: High-Throughput Fractional Gravity Mixing / Continuous-Flow Homogenization

• Scale: Extreme 58 Inches (1473.2 mm) Overall Length

• Internal Capacity: High-Volume 1.5-Inch (38.1 mm) Internal Bore

• Joint Configuration: 45/50 Top and Bottom Heavy-Duty Joints

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

Technical Overview: The Industrial-Scale Gravity Titan

When transitioning a continuous-flow chemical process from the research bench to the pilot plant, standard mixing columns lack the internal volume required to handle industrial feed rates. The Used 58-Inch Silver Vacuum Jacketed Oldershaw Mixing Column bridges this gap, standing as a massive, high-throughput titan of laboratory and pilot-scale homogenization.

Measuring an astonishing 58 inches (nearly 5 feet) in length, this towering borosilicate glass apparatus is engineered for high-volume fractional gravity mixing. The heavy-duty 1.5-inch internal bore is densely lined with closely spaced glass protrusions. As large volumes of multi-part liquids or highly viscous mixtures descend through the column, these internal obstructions continuously fracture and disrupt the fluid path. This generates aggressive, unpowered shear forces over a 4.8-foot vertical drop, ensuring perfect homogenization at industrial flow rates. Supported by massive 45/50 joints and protected by a 3.5-inch outer silvered vacuum jacket, this pre-owned apparatus is built for the most demanding pilot-scale synthesis workflows.

Master Technical Specifications

Core Engineering & Scale-Up Advantages

High-Volume 1.5-Inch Internal Bore

Standard mixing columns typically feature 10mm to 1-inch internal diameters, which can severely bottleneck continuous-feed setups during scale-up. The expansive 1.5-inch (38.1 mm) ID of this column accommodates significantly higher liquid flow rates and more viscous suspensions. Combined with the massive 58-inch vertical drop, it delivers an unparalleled combination of extreme dwell time and high-volume processing capacity.

Massive 45/50 Heavy-Duty Joints

A glass column measuring nearly 5 feet in length and 3.5 inches in diameter carries substantial physical weight—especially when actively loaded with descending fluids. Standard 24/40 joints would instantly snap under the lateral stress. This unit is equipped with oversized 45/50 heavy-duty glass joints at both ends. These massive connections provide the structural integrity required to lock this towering column safely into large-scale pilot-plant infrastructure.

Near-Adiabatic Stability via Silvered Jacketing

Pushing large volumes of fluid across a 58-inch gap makes the process highly vulnerable to rapid thermal loss. To combat this, the massive 3.5-inch outer jacket is evacuated to eliminate conductive and convective heat transfer. Crucially, the silver coating on a vacuum-jacketed Oldershaw column is there primarily to reduce heat transfer by radiation. This reflective thermal mirror completely isolates the internal 1.5-inch bore from ambient pilot-plant drafts, ensuring high-volume heated or cryo-chilled reagents maintain exact process temperatures throughout their prolonged transit.

Corrugated Expansion Bellows for Extreme Lengths

The physical laws of thermal expansion dictate that a 58-inch internal glass tube will expand violently when subjected to high-temperature fluids. Because the outer silvered vacuum jacket remains at room temperature, this differential expansion would cause catastrophic shearing at the welds. This column is fortified with corrugated expansion bellows integrated into the outer jacket. These borosilicate folds act as an essential mechanical shock absorber, safely flexing to absorb the intense thermal gradients generated during pilot-scale operations.

Ideal Pilot-Scale & Industrial Applications

This oversized, used mixing column is explicitly designed for high throughput scientific and industrial environments:

• Pilot-Plant Scale-Up: Translating benchtop continuous-flow methodologies into high-volume production workflows.

• Bulk Liquid-Liquid Extractions: Maximizing contact time and aggressive shear force between immiscible industrial solvents over an extreme vertical drop.

• High-Volume Reactor Feeds: Serving as a continuous in-line static mixer to guarantee high feed rates of multi-part reagents are perfectly blended before entering massive batch reactors.

• Viscous Emulsion Generation: Utilizing the wide 1.5-inch bore to accommodate thicker, more resistant suspensions that would clog standard micro-bore mixers.

Complete Your Pilot-Scale Continuous-Flow Stack

An apparatus of this massive scale requires industrial-grade laboratory infrastructure to operate safely. Build out your high-throughput system with fully compatible equipment from HiTechTrader:

• Large-Scale Glassware Integration: Safely mount this massive piece with compatible heavy-duty 45/50 adapters, massive receiving carboys, and industrial clamps from our used laboratory equipment inventory.

• High-Capacity Fluid Metering: Drive continuous, high-volume liquid flow into the top of this 1.5-inch column using our robust laboratory pumps.

• Pilot Reactor Integration: Feed perfectly homogenized bulk solutions directly into pilot-scale laboratory reactors or multi-liter Parr reactors.

• Structural Walk-In Safety: Secure this 4.8-foot glass titan using heavy-duty walk-in framework and appropriate containment and safety equipment.

• Bulk Purity Verification: Validate your continuous high-volume extractions using our premium analytical instruments, featuring fully refurbished used GC-MS systems.

Buy the Used 58-Inch Pilot-Scale Mixing Column

HiTechTrader offers this Used 58-Inch Silver Vacuum Jacketed Oldershaw Mixing Column as an incredibly rare, cost-effective solution for process engineers requiring pilot-scale, continuous-flow homogenization without the staggering capital costs and lead times of custom glassblowing.

Contact HiTechTrader today to:

• Confirm immediate stock availability and request official pricing.

• Discuss compatibility with 45/50 hardware and heavy-duty structural clamping.

• Arrange for custom-crated, heavily padded domestic or international freight shipping to safely transport this massive 58-inch component.

FAQs

What is a pilot-scale fractional gravity mixing column?

A pilot-scale fractional gravity mixing column is an oversized glass apparatus designed for high-throughput continuous-flow homogenization. Unlike distillation columns, it uses a dense series of internal glass protrusions to constantly disrupt the path of descending liquids. By scaling up the internal diameter (e.g., 1.5 inches) and the length (e.g., 58 inches), it generates aggressive turbulence to perfectly mix large volumes of multi-part reagents or biphasic liquids at industrial feed rates without motorized impellers.

Why does a 58-inch gravity mixing column require expansion bellows and a silver vacuum jacket?

The sheer size of a 58-inch column makes its internal fluids highly susceptible to radiant heat loss, and the glass itself highly vulnerable to thermal stress. The silver coating on a vacuum-jacketed Oldershaw column is applied primarily to reduce heat transfer by thermal radiation, insulating the fluid. Meanwhile, the corrugated expansion bellows act as a crucial mechanical buffer, flexing to absorb the massive differential thermal expansion that occurs between the hot 58-inch inner tube and the cooler outer jacket.