Coil Condenser / Graham Condenser

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The GISCOM Coil Condenser, also known as a Graham Condenser, is a high-efficiency laboratory condenser designed for superior vapor condensation in distillation, reflux, and solvent recovery systems. Featuring a tightly wound inner coil for maximum cooling surface area, it provides excellent heat-exchange performance even under demanding laboratory conditions. It is an essential component for chemical synthesis, analytical workflows, and industrial research where high cooling capacity and stability are required.

 Key Features

• High-efficiency cooling coil ensures maximum vapour-to-coolant contact.
• Manufactured from premium Borosilicate Glass 3.3 for durability and thermal shock resistance.
• Superior chemical resistance suitable for organic solvents, acids, and laboratory reagents.
• Leak-proof construction with precision-made ground joints.
• Smooth coolant flow through the outer jacket for stable and uniform heat exchange.
• Crystal-clear transparency for easy observation of condensation.
• Available with glass hose connectors for secure coolant tubing attachment.
• Wide compatibility with standard distillation and reflux assemblies.

Material Specifications

• Material: Borosilicate Glass 3.3
• Thermal Properties: Low thermal expansion (3.3 × 10⁻⁶ K⁻¹), high thermal resistance, and minimal stress deformation
• Chemical Resistance: Resistant to most acids, bases, salts, and organic solvents. Not suitable for hydrofluoric acid (HF)
• Mechanical Properties: Excellent strength and wall uniformity. Enhanced durability for repeated heating/cooling cycles
• Standards Compliance: Produced as per ISO 3585 / DIN laboratory glassware standards

Technical Specifications

• Available Lengths: As per the standard size table
• Joint Types: As per the standard size table
• Design: Inner coil condenser tube, Outer coolant jacket with hose connectors
• Coolant Connections: Standard glass hose nozzles
• Tolerance: ISO-compliant dimensional accuracy
• Accessories (optional): Joint clips, Support clamps, Rubber coolant tubing

Handling & Precautions

• Ensure proper attachment of coolant hoses before starting operation.
• Avoid sudden heating or cooling to prevent thermal shock.
• Maintain moderate water pressure; excessive pressure may damage the jacket.
• Clean using mild lab detergents; avoid abrasive pads or corrosive cleaners.
• Compatible with autoclaving; avoid dry heat at extreme temperatures.
• Do not use with HF or strongly reactive agents that attack silica-based glass.
• Store safely in padded racks to prevent impact or scratching.

 Applications

• Ideal for high-efficiency distillation, reflux, solvent purification, and organic synthesis.
• Popular in:
  Chemical laboratories
   Pharmaceuticals & biotechnology R&D
   Academic research institutions
   QA/QC testing labs
   Petrochemical and environmental analysis labs
• Frequently used in reactions requiring enhanced condensation efficiency and stable temperature control.