Specific Gravity Bottle / Pycnometer

Specific Gravity Bottle, with PTFE interchangeable stopper

  • Complies with DIN / ISO 3507
  • Resistant to chemical attacks and mechanically strong
  • Used to determine liquid densities.

Description

Catalogue No. Capacity (ml)
11024/1 25
11024/2 50
11024/3 100

The MEDILAB 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:

  • Manufactured as per ISO, DIN, and ASTM guidelines for volumetric laboratory glassware
  • Calibration aligns with standard density measurement methods

Technical Specifications

  • Available Capacities:
    25 ml to 100 ml (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°C
  • Certificate available on request

Packaging:

  • Individually packed in shock-resistant boxes
  • Export-grade outer cartons with multi-layer protection

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

  • Used for determining the specific gravity / relative density of liquids, oils, solvents, chemicals, pharmaceuticals, and fine powders.

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.

Why Choose MEDILAB

  • 35+ years of manufacturing excellence in scientific and laboratory glassware.
  • Trusted in 40+ countries, supplying global distributors, research institutes, and industrial laboratories.
  • Export-quality production standards with strict QC at every stage.
  • OEM and private labelling support for large-volume buyers.
  • Consistency, precision, and reliability in every product.
  • Robust packaging and an efficient global supply chain, ensuring safe and timely delivery.