Flask, Pear shape

The GISCOM Pear-Shaped Flask is a precision-crafted laboratory vessel designed for efficient heating, mixing, distillation, and solvent evaporation. Its tapered pear-shaped body ensures optimal thermal distribution and reduced sample loss, making it ideal for sensitive chemical and analytical procedures. This flask is widely used in research, pharmaceuticals, chemicals, and academic laboratories for processes requiring uniform heating and controlled reaction conditions. Its robust construction and ergonomic geometry make it a dependable choice for routine and advanced laboratory applications.

Key Features

• Uniform Heating: Pear-shaped design enhances thermal efficiency and supports even heat transfer.
• Durable Construction: Manufactured from high-grade Borosilicate Glass 3.3 for exceptional chemical and thermal resistance.
• Improved Recovery: The Narrow bottom minimises residue adherence and enables easy recovery of precious samples.
• High Clarity & Transparency: Offers excellent visibility for monitoring reactions.
• Autoclavable & Reusable: Withstands repeated sterilisation cycles without performance degradation.
• Leak-Free Operation: Compatible with standard joint sizes and sealing systems.
• Versatile Laboratory Use: Ideal for rotary evaporation, heating of solvents, and general-purpose laboratory tasks

Material Specifications

• Material: Borosilicate Glass 3.3
• Thermal Properties: Low thermal expansion coefficient (3.3 × 10⁻⁶ /°C) ensures superior resistance to thermal shock. Withstands high temperatures during heating and autoclaving.
• Chemical Resistance: Resistant to most acids, alkalis, organic solvents, and corrosive chemicals. A non-reactive surface prevents sample contamination.
• Mechanical Properties: High mechanical strength suitable for vacuum and pressure-related applications (as per design).
• Standards Compliance: Conforms to international laboratory glassware standards.

Technical Specifications

• Available Capacities: As per the standard size table
• Design: Pear-shaped body with a round bottom for optimised heating.
• Joint Options: Standard taper joints (e.g., 24/29, 29/32, etc.) ensuring compatibility with laboratory instruments.
• Tolerance/Accuracy: Designed as per ISO/DIN tolerance guidelines for laboratory flasks.
• Surface Finish: Smooth, annealed surface for improved durability.
• Calibration: Not typically required unless specified for certain models.
• Accessories (Optional): Joint clamps, Stoppers (glass/PTFE)

Handling & Precautions

• Safe Use: Avoid sudden temperature changes to prevent thermal shock.
• Cleaning: Use mild laboratory detergents; avoid abrasive scrubbers to maintain clarity.
• Autoclaving: Safe for autoclave sterilisation; ensure joints are slightly loosened before autoclaving.
• Heating Limits: Suitable for high-temperature applications; always heat gradually.
• Best Practices: Inspect for cracks or chips before use. Use proper clamps and supports during heating or evaporation. Store in padded racks to prevent impact damage.

Applications

• Ideal for rotary evaporation, solvent concentration, and distillation operations.
• Widely used in pharmaceutical R&D, chemical synthesis, biotechnology, and analytical chemistry workflows.
• Suitable for evaporation of reaction mixtures, sample preparation, and general laboratory heating procedures.
• Commonly used in universities, QC/QA laboratories, production units, and research facilities requiring reliable glassware performance.
• Supports daily lab operations where precision heating and minimal sample retention are essential.