Inter-Joint 35/25 Silver Vacuum Jacketed Oldershaw Mixing Column

Used Borosilicate Glass Mixing Column with 35/25 Joints and Internal Protrusions

The Inter-Joint 35/25 Oldershaw Column is a used laboratory glass mixing column designed for solution mixing, vapor handling, thermal isolation, and specialized chemical processing workflows. Constructed from borosilicate glass, this 35/25 silver vacuum jacketed Oldershaw mixing column features internal protrusions positioned closely together to promote excellent mixing of liquid samples or solutions.

Unlike a traditional plated Oldershaw distillation column, which uses perforated trays and downcomers to create theoretical stages for fractional distillation, this Inter-Joint column is designed with internal protrusions that help increase contact, turbulence, and mixing within the column. This makes it useful for laboratories that need improved interaction between flowing liquids, vapors, or solution phases in a controlled glassware setup.

The silver coating on the vacuum-jacketed column helps reduce heat transfer by radiation, supporting more stable internal temperature conditions during laboratory workflows where heat loss or thermal fluctuation may affect performance.

For related equipment, browse HiTechTrader’s used laboratory equipment, laboratory reactors, laboratory pumps, and analytical instruments.

Oldershaw-Style Mixing Column for Laboratory Workflows

This Inter-Joint 35/25 Oldershaw mixing column is designed to support efficient mixing inside a borosilicate glass column. The internal protrusions create repeated flow disruption, helping increase contact between sample phases as liquid or vapor moves through the column.

This design can be useful for workflows involving:

• solution mixing
• liquid sample interaction
• vapor-liquid contact support
• chemical process development
• solvent handling workflows
• laboratory-scale reaction support
• temperature-sensitive mixing
• process research and QA/QC testing

Because the protrusions are close together, the column provides more internal contact points than a plain glass tube, helping improve mixing behavior in suitable lab setups.

Silver Vacuum Jacket for Reduced Radiant Heat Transfer

This Inter-Joint column includes a silver vacuum jacket. The silver coating on a vacuum-jacketed glass column is used primarily to reduce heat transfer by radiation.

Thermal stability can be important when working with temperature-sensitive solutions, vapors, or process streams. The silvered vacuum jacket helps limit radiant heat exchange between the column interior and the surrounding lab environment.

A silver vacuum jacket helps support:

• reduced radiant heat transfer
• improved thermal isolation
• more stable internal column conditions
• reduced external temperature influence
• improved repeatability between runs
• better control in temperature-sensitive workflows

For laboratories working with chemical separation, sample preparation, or vapor liquid contact applications, this type of jacketed glassware can help improve process consistency.

35/25 Top and Bottom Ground Glass Joints

This used Inter Joint Oldershaw mixing column is equipped with 35/25 top and bottom joints, making it suitable for compatible laboratory glassware assemblies using 35/25 ground glass connections.

The 35/25 joint format may be used with compatible:

• custom distillation setups
• mixing assemblies
• vapor transfer systems
• reaction glassware
• laboratory adapters
• receiving assemblies
• specialty chemical processing glassware

Because the column has 35/25 joints on both ends, it can be integrated into compatible workflows where secure glassware connections and controlled internal flow are needed.

Borosilicate Glass Construction

The column is constructed from borosilicate glass, a standard material for laboratory glassware due to its chemical resistance, thermal stability, and visibility during operation.

Borosilicate glass benefits include:

• compatibility with many laboratory solvents and reagents
• clear visibility of internal flow and mixing behavior
• resistance to thermal stress in lab workflows
• durability for repeated use
• suitability for organic chemistry, chemical processing, and teaching labs

This makes the Inter-Joint 35/25 Oldershaw mixing column a practical choice for laboratories that need visible, chemically resistant glassware for mixing, vapor transfer, or process development work.

No Expansion Bellows / Non-Corrugated Jacket Design

This column is listed with no corrugated vacuum jacket or expansion bellows. That means it has a more rigid silver vacuum jacket design compared with some vacuum-jacketed columns that include bellows for thermal expansion flexibility.

Because this is a used vacuum jacketed glass column, buyers should verify the glass condition, silvering, vacuum jacket integrity, and joint condition before use.

Important buyer checks include:

• confirm both 35/25 joints are intact
• inspect the glass for chips, cracks, or stress marks
• verify silvered jacket condition
• confirm column length and diameter match the setup
• confirm compatibility with the intended glassware assembly

Technical Specifications

Typical Applications

The Inter-Joint 35/25 Silver Vacuum Jacketed Oldershaw Mixing Column is suitable for laboratories needing specialized glassware for mixing, vapor handling, or process-support applications.

Common applications include:

• solution mixing
• vapor-liquid contact workflows
• chemical process development
• solvent handling
• organic chemistry research
• laboratory-scale reaction support
• temperature sensitive sample handling
• distillation support setups
• specialty glassware assemblies
• teaching laboratory demonstrations
• QA/QC method development

This column is especially useful for labs that need improved internal mixing behavior in a vacuum jacketed borosilicate glass format.

Key Benefits

Internal Protrusions for Mixing

Closely spaced protrusions help improve solution contact, flow disruption, and mixing inside the column.

Silver Vacuum Jacket

Helps reduce radiant heat transfer and supports more stable internal conditions.

35/25 Top and Bottom Joints

Compatible with laboratory assemblies using 35/25 glassware connections.

Borosilicate Glass Construction

Offers chemical resistance, visibility, and thermal stability for laboratory workflows.

Used Equipment Value

Provides specialty laboratory glassware at a lower cost than many new custom glass components.

Useful for Process Development

Supports mixing, vapor liquid contact, thermal isolation, and chemical workflow development.

Why Buy Laboratory Glassware from HiTechTrader?

HiTechTrader helps laboratories source scientific, analytical, chemical processing, and laboratory equipment for research, testing, purification, process development, and education. This used Inter-Joint 35/25 Silver Vacuum Jacketed Oldershaw Mixing Column is a practical option for laboratories that need specialized vacuum jacketed glassware for mixing, vapor-liquid contact, or process-support workflows.

Buyers can also explore related equipment categories, including:

• used laboratory equipment
• laboratory reactors
• Parr reactors
• laboratory pumps
• analytical instruments
• used GC-MS systems
• containment and safety equipment

For laboratories building a complete chemical processing or separation workflow, this mixing column can be used alongside compatible reactors, condensers, adapters, receiving flasks, vacuum systems, heating equipment, GC-MS instruments, and other analytical tools.

Used Inter-Joint 35/25 Oldershaw Mixing Column for Sale

HiTechTrader offers this used Inter-Joint 35/25 Silver Vacuum Jacketed Oldershaw Mixing Column for laboratories needing specialty glassware for mixing, vapor liquid contact, or thermal isolation workflows.

This column is a practical choice for labs performing chemical process research, solvent handling, solution mixing, vapor transfer, organic chemistry experiments, and laboratory-scale workflow development.

Contact HiTechTrader to request pricing, verify dimensions, or source additional laboratory glassware and chemical processing equipment for your setup.

FAQs

An Oldershaw mixing column is a laboratory glass column designed to improve contact and mixing inside a chemical workflow. Instead of perforated distillation plates, this Inter-Joint 35/25 column uses closely spaced internal protrusions to help mix liquid samples or solutions. A silver vacuum jacketed mixing column helps reduce radiant heat transfer and maintain more stable internal conditions, making it useful for chemical process development, vapor-liquid contact, solvent handling, and laboratory-scale mixing workflows.