MEDILAB Standard Ground Glass Joints (Cone, with tip) are precision-engineered interchangeable connectors designed to ensure leak-proof, secure, and standardized jointing in laboratory glassware assemblies. Ideal for chemical handling, distillations, reactions, and analytical setups, these joints enable safe and efficient integration of compatible laboratory apparatus. Their high-accuracy grinding and dimensional consistency make them essential for reliable performance in research, industrial, and quality-control environments.

 Key Features

• Manufactured from high-purity Borosilicate Glass 3.3 for superior chemical and thermal resistance
• Precision-ground cone joint ensures excellent sealing and leak prevention
• Compliant with international standards (ISO 383 / DIN 12249) for interchangeability
• Smooth grinding finish enhances stability and reduces wear over time
• With a tip design for convenient assembly and alignment
• High mechanical strength and durable wall construction for long-term use
• Compatible with a wide range of laboratory glassware systems
• Resistant to thermal shock, aggressive chemicals, and repeated heating cycles

Material Specifications

Material: Borosilicate Glass 3.3

• Thermal Properties: Low thermal expansion coefficient (~3.3 × 10⁻⁶ /°C); excellent resistance to thermal shock
• Chemical Resistance: Highly resistant to acids, solvents, and most laboratory reagents
• Mechanical Strength: Strong, stable, and durable for repeated usage
• Standards Compliance: ISO 383 – Laboratory glassware interchangeability requirements 12249 – Standard ground joint dimensions and tolerances

 Technical Specifications

• Available Joint Sizes: Full range (e.g., 10/19, 14/23, 19/26, 24/29, 29/32, 34/35, 45/40, etc.)
• Dimensions: Manufactured to ISO/DIN standard taper specifications for universal compatibility
• Tolerance: Precision-ground taper ensuring accurate fit and minimal leakage
• Calibration: Not applicable (non-volumetric component)
• Packaging: Individually packed or bulk-packed in protective, export-grade cartons
• Accessories Included: Optional compatible sockets, adapters, and connectors available upon request

Handling & Precautions

• Handle with care to avoid impact, surface scratches, or sudden temperature changes
• Clean using standard laboratory detergents; avoid abrasive materials
• Compatible with autoclaving and dry heat sterilisation (up to 180–200°C)
• Avoid direct flame heating on the joint area to maintain grinding precision
• Ensure proper lubrication (if required) with joint grease for vacuum applications
• Store in clean, padded compartments to prevent chipping or damage to the ground surface

 Applications

• Widely used in universities, chemical laboratories, pharmaceutical R&D, QC/QA labs, and industrial research facilities
• Essential in assembling distillation units, reaction setups, extraction systems, and analytical instruments
• Ideal for organic synthesis, heating/cooling reactions, sample preparation, and chemical processing workflows
• Suitable for biotechnology, environmental testing, petrochemical analysis, and academic research
• Ensures reliable, repeatable sealing needed for precision laboratory operations

 Why Choose MEDILAB

• 35+ years of industry expertise in scientific and laboratory glassware manufacturing
• Trusted in 40+ countries, supplying research labs, universities, and industrial clients worldwide
• Export-quality production with strict adherence to global standards
• OEM / Private Labelling services available for distributors and brands
• Consistent quality and dimensional accuracy across every batch
• Reinforced, secure packaging for safe international shipment
• Reliable global supply capability, ensuring timely deliveries for large and small orders