The MEDILAB Detachable PTFE Stopcock for Burettes is a high-precision flow control component designed for accurate titration and reagent dispensing. Its detachable PTFE key ensures easy cleaning, maintenance, and long-term leak-free performance. Engineered for reliability in analytical and volumetric applications, this stopcock is essential for laboratories requiring consistent, contamination-free operation with demanding chemicals.

Key Features

• Detachable PTFE key for hassle-free cleaning and replacement.
• Smooth, leak-proof operation, ideal for precise titration workflows.
• Constructed using Borosilicate Glass 3.3, offering superior chemical and thermal resistance.
• Universal compatibility with standard laboratory burettes.
• High-transparency glass barrel allows clear visual monitoring of reagent flow.
• Non-reactive PTFE material ensures durability and performance in corrosive environments.
• Light-torque operation reduces user fatigue during extended laboratory use.
• Long service life due to wear-resistant PTFE and sturdy glass construction.

Material Specifications

Body Material: Borosilicate Glass 3.3
Key Material: Premium PTFE (Polytetrafluoroethylene)

Material Properties:

• Thermal Stability: Withstands high temperatures and rapid temperature changes.
• Chemical Inertness: Resistant to acids, alkalis, solvents, and aggressive reagents.
• Mechanical Strength: High rigidity and impact resistance suitable for daily lab use.
• PTFE Features: Non-stick, self-lubricating, corrosion-resistant, and long-lasting.

Standards Compliance:

• Borosilicate Glass meets ISO 3585
• Designed in accordance with standard ISO/DIN burette specifications

Technical Specifications

• Type: Detachable PTFE Stopcock for Burettes

• Compatibility: Fits standard burette capacities (10 ml, 25 ml, 50 ml, 100 ml)

• Tolerance: Precision-machined for leak-free performance and stable flow control

Operating Temperature Range:

• Glass: −20°C to +200°C
• PTFE: Up to approx. 250°C

• Cleaning & Sterilisation: Autoclavable (observe gradual heating/cooling)

• Packaging:

• Individually packed for maximum protection
• Export-quality cushioning for bulk shipments

• Available Accessories: Replacement PTFE keys, custom adaptors (optional)

Handling & Precautions

• Ensure gentle insertion and removal of the PTFE key to prevent glass stress.
• Avoid excessive tightening of PTFE seals effectively with light pressure.
• Clean using mild detergent or compatible solvents; avoid scrubbing with abrasives.
• Autoclave with controlled temperature transitions to prevent thermal shock.
• Flush thoroughly after use with strong acids or bases to maintain efficiency.
• Store in a clean, dry environment to avoid dust interference with the key movement.
• Do not expose to open flames or sudden thermal spikes.

Applications

Ideal for use in:

• Analytical chemistry labs for precise titration and volumetric analysis
• Pharmaceutical and biotech labs for assay preparation and QA/QC workflows
• Chemical industries for reagent dispensing and formulation tasks
• Academic and research institutions for laboratory practicals and research studies
• Food & beverage QA labs, environmental testing labs, and industrial R&D facilities

The detachable PTFE design enables easy maintenance, making it particularly valuable for laboratories that require frequent cleaning or stringent contamination control.

Why Choose MEDILAB

• Over 35 years of industry expertise in scientific glassware manufacturing
• Trusted by laboratories in 40+ countries worldwide
• Export-grade precision manufacturing conforming to global quality standards
• OEM and private labelling options are available for distributors
• Reliable, consistent quality supported by rigorous inspection protocols
• Robust export packaging ensuring safe global transportation
• Dependable global supply network for continuous availability