Description

Catalogue No.	Bore(mm)
11043/01	2

The MEDILAB Private: Rotaflow Stopcock is a high-performance precision valve engineered for controlled liquid and gas flow in laboratory glassware assemblies. Designed with a right-angle configuration and a double O-ring system, it delivers highly reliable sealing, smooth operation, and exceptional chemical compatibility. Its robust construction makes it indispensable for research, quality control, chemical processing, titration setups, and specialised instrumentation workflows.

 Key Features

• Double O-Ring Sealing System ensures superior leak prevention and long-term operational stability.
• Right-Angle Flow Path for efficient liquid redirection and optimised system layout.
• Smooth Rotational Control with minimal torque for precise flow adjustments.
• Made from Borosilicate Glass 3.3, offering exceptional thermal, chemical, and mechanical durability.
• Available with a Red or Blue Cap for easy identification and workflow organisation.
• High Transparency for clear visual monitoring of fluid movement.
• Interchangeable with Standard Laboratory Glassware following global joint and fit specifications.
• Autoclavable and Reusable, suitable for high-temperature sterilisation and intensive laboratory use.

 Material Specifications

• Material: Premium Borosilicate Glass 3.3
• Thermal Characteristics: Very low thermal expansion (~3.3 × 10⁻⁶/K), excellent heat resistance, and thermal shock stability
• Chemical Resistance: Highly resistant to acids, alkalis, organic solvents, and corrosive vapours. Non-porous and non-reactive surface prevents contamination
• Mechanical Properties: High structural integrity and hardness. Enhanced resistance to breakage and abrasion
• Standards Compliance: Conforms to international DIN/ISO specifications for interchangeable lab glassware. Suitable for GMP/GLP laboratory environments

 Technical Specifications

• Design: Rotaflow Stopcock with double O-ring, right-angle configuration
• Bore Sizes: Available in multiple bore diameters (customizable for OEM requirements)
• Connector Compatibility: Fits standard glassware joints and tubing interfaces
• Temperature Range: Up to 200–250°C for dry heat. Fully autoclavable for sterile operations
• Tolerance & Accuracy: Precision-ground interfaces ensuring consistent sealing and smooth motion
• Included Accessories: Colour-coded cap (Red / Blue), Optional replacement O-rings (on request)

 Handling & Precautions

• Always rotate the stopcock gently; avoid overtightening.
• Clean using mild, non-abrasive detergents; rinse with distilled water.
• Ensure O-rings remain lubricated with compatible silicone-based lubricants for optimal rotation.
• Safe for autoclaving—avoid sudden temperature shocks such as moving from heat to cold water.
• Do not expose to open flame; use controlled heating only.
• Store upright or in protected glassware racks to prevent accidental impact or chipping.

 Applications

• Research Laboratories: Flow control systems, distillation, solvent routing, and titration assemblies.
• Pharmaceutical Manufacturing: QC/QA workflows, reagent handling, sterile material transfer.
• Chemical & Petrochemical Labs: Corrosive fluid management and analytical setup configurations.
• Biotechnology & Life Sciences: Controlled dispensing in sensitive assays and buffer systems.
• Academic Institutions & Universities: Practical laboratory experiments and teaching modules.
• Environmental & Food Testing Labs: Reliable fluid management during sample preparation and analysis.
• The double O-ring and robust design make it ideal for demanding and high-precision laboratory environments.

 Why Choose MEDILAB

• 35+ Years of Expertise in high-precision laboratory glassware manufacturing.
• Exporting to 40+ Countries with consistent global supply capabilities.
• Premium Export-Quality Production meeting stringent international standards.
• OEM & Private Label Programs available for distributors and global research brands.
• Unmatched Quality & Reliability through strict inspection and controlled production processes.
• Strong, Protective Packaging engineered for long-distance transport and bulk shipments.