Specific Gravity Bottle / Pycnometer

The GISCOM Specific Gravity Bottle, also known as a Pycnometer, is a precision laboratory instrument designed to determine the specific gravity (relative density) of liquids and fine powders with high accuracy. Manufactured from premium Borosilicate Glass 3.3, it provides excellent chemical stability and consistent volumetric performance. This bottle is essential in analytical labs, quality control testing, material characterisation, and research applications that require reliable and repeatable density measurements. Its robust construction and calibrated design make it a trusted choice for laboratories and industries worldwide.

Key Features

• High-accuracy volumetric design ensures precise determination of specific gravity and density.
• Manufactured from Borosilicate Glass 3.3 for excellent thermal, chemical, and mechanical durability.
• Smooth, uniform internal surface minimises contamination and ensures easy cleaning.
• Ground-glass stopper with a capillary hole allows air displacement for accurate filling.
• Leak-proof, stable construction suitable for repeated use in analytical and QC procedures.
• Available in multiple standard capacities to support a wide range of testing methods.
• Excellent clarity for easy visualisation of the liquid meniscus and accurate reading.
• Heat-resistant and autoclave-safe, suitable for sterilised testing environments.
• Ideal for labs requiring consistent and repeatable results in routine analysis.

Material Specifications

• Material: High-quality Borosilicate Glass 3.3
• Thermal Properties: Low thermal expansion coefficient (3.3 × 10⁻⁶ /°C) High thermal shock resistance
• Chemical Resistance: Resistant to most acids, alkalis, and organic solvents. Non-reactive and ideal for analytical applications
• Mechanical Properties: High hardness and structural stability. Scratch- and abrasion-resistant surface
• Standards Compliance: Calibration aligns with standard density measurement methods

Technical Specifications

• Available Capacities: As per the standard size table
• Design: Flat-bottom or round-bottom, depending on the variant. Ground-glass stopper with capillary hole
• Accuracy / Tolerance: Conforms to Class A or Class B accuracy (on request). Individually calibrated for precise volume
• Dimensions: Standard dimensions based on international norms. Custom sizes available for OEM orders
• Calibration Details: Volume calibrated at 20°. Certificate available on request
• Accessories Included: Ground-glass stopper; Optional PTFE stopper available on request

Handling & Precautions

• Handle the bottle carefully to avoid breakage of the capillary stopper.
• Rinse with distilled water before and after use for accurate measurements.
• Suitable for cleaning with mild detergents, laboratory glassware cleaners, or ultrasonic baths.
• Autoclaving: Safe up to 121°C; avoid sudden temperature changes to prevent thermal shock.
• Do not use abrasive materials or sharp tools for cleaning.
• Ensure complete drying before storage to maintain accuracy and prevent contamination.
• Avoid filling with highly viscous materials unless using appropriate handling techniques.

Applications

Widely applied in:

• Pharmaceutical QC/QA laboratories
• Chemical analysis laboratories
• Petrochemical and petroleum testing
• Food & beverage analysis
• Biotechnology and academic research
• Material science and research institutes
• Essential for routine quality testing, product formulation, method development, and regulatory compliance.