Description
| Catalog No. | Cone Size | Stopcock Size |
| 11133/1 | 14/23 | B-12 |
| 11133/2 | 19/26 | B-12 |
| 11133/3 | 24/29 | B-14 |
| 11133/4 | 29/32 | B-14 |
The MEDILAB Adapter Cone with Glass Stopcock is a precision-crafted connector designed for controlled transfer of liquids or gases in laboratory setups. Its right-angle configuration allows seamless integration between apparatus while providing accurate flow control through a robust glass stopcock. Essential for analytical, preparative, and industrial workflows, this adapter ensures leak-free operation and reliable performance in demanding scientific environments.
Key Features
- Right-angle connection design for efficient routing of liquids, vapours, or gases.
- Integrated glass stopcock enables precise flow regulation and isolation.
- Manufactured from Borosilicate Glass 3.3 for superior thermal and chemical resistance.
- High-precision ground joints ensure a tight, interchangeable fit with standard laboratory glassware.
- Smooth stopcock operation with excellent sealing to prevent leaks or contamination.
- An optional PTFE key stopcock is available for enhanced chemical resistance and low friction.
- Crystal-clear transparency for easy flow observation and process monitoring.
- Reusable and autoclavable, offering long-term durability and cost efficiency.
Material Specifications
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Material: Borosilicate Glass 3.3
Thermal Characteristics:
- High resistance to thermal shock
- Maximum working temperature: ~500°C
- Coefficient of linear expansion: 3.3 × 10⁻⁶ /°C
Chemical Characteristics:
- Excellent resistance to acids, alkalis, salts, and organic solvents
- Inert, non-reactive surface to maintain sample purity
Mechanical Properties:
- High-dimensional stability and strength
- Precision-ground joint surfaces
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Standards Compliance: ISO 3585, DIN/ISO standard joint dimensions
Technical Specifications
Design: Adapter cone with 90° connection and integrated glass stopcock
Available Joint Sizes:
Common joint options: 14/23 to 29/32 (as per the standard size table)
Stopcock Type:
- Standard glass key stopcock
- Optional PTFE key stopcock available for high-corrosive applications
Tolerance: Manufactured to precise joint tolerances for perfect compatibility and vacuum applications
Packaging:
- Individually bubble-wrapped
- High-density export cartons for maximum transit protection
- Moisture-resistant outer packaging
Accessories Included: None (compatible with standard lab glassware assemblies)
Handling & Precautions
- Open and close the stopcock gently to maintain smooth operation and prevent wear.
- Use appropriate joint grease when required for vacuum or gas-tight applications.
- Clean with mild detergents or approved solvents; avoid abrasive materials that may scratch glass.
- Autoclavable—ensure gradual heating and cooling cycles to prevent stress fractures.
- Do not apply direct flame to thin or jointed areas.
- Inspect the stopcock and joints regularly for chips, cracks, or residue buildup.
- Store upright or cushioned to prevent accidental breakage.
Applications
Ideal for a wide range of laboratory and industrial processes, including:
- Liquid transfer and distribution in analytical setups
- Vacuum and gas line control
- Organic synthesis and chemical processing
- Pharmaceutical and biotech workflows where controlled flow is critical
- QC/QA laboratories for routine testing operations
- Academic and research laboratories for teaching and experimental setups
- Chemical, petrochemical, food, and environmental labs using glass assemblies and distillation systems
The adapter plays a key role in assembling modular glass systems, ensuring safe, controlled, and contamination-free handling of substances.
Why Choose MEDILAB
- 35+ years of expertise in scientific glassware manufacturing
- Supplying laboratories in 40+ countries worldwide
- High-precision, export-quality production using certified Borosilicate Glass 3.3
- OEM and private labelling options for distributors and brands
- Strict quality control and dimensional accuracy across all glassware
- Reliable global shipping with robust, break-resistant packaging
- Consistent performance, long service life, and trusted customer support
