EN ISO 24450:2005 PDF

Overview

EN ISO 24450:2005 specifies international standards for laboratory glassware, focusing on wide-necked boiling flasks, including conical, flat-bottom, and round-bottom types. Developed by ISO Technical Committee ISO/TC 48 and adopted by CEN, this standard ensures consistent dimensions, material quality, and construction requirements for these flasks, which are widely used across chemical, biological, and industrial laboratories.

The standard aims to guarantee compatibility of wide-necked boiling flasks with other laboratory equipment, promote safety, and support reproducible lab procedures globally. While EN ISO 24450:2005 covers wide-necked flasks, related ISO standards apply to narrow-necked and flasks with conical ground joints.

Key Topics

• Scope and Series

  • Covers wide-necked boiling flasks for general laboratory use.
  • Defines specific nominal capacities for each flask type:
    • Conical flasks: 50, 100, 250, 500, 1,000 ml
    • Round-bottom flasks: up to 10,000 ml (50, 100, … 10,000 ml)
    • Flat-bottom flasks: up to 2,000 ml

• Material

  • Flasks must be made from borosilicate glass 3.3 according to ISO 3585.
  • Glassware shall be free of visible defects or internal stress that could impair performance.

• Construction and Dimensions

  • Stability requirements ensure conical and flat-bottomed flasks stand steadily without rocking.
  • Necks should be circular and strengthened, with length proportional to neck diameter (1 to 1.25 times).
  • Detailed dimensional tables specify wall thickness, body diameters, and overall height for each flask type and size.
  • Wall thickness ranges ensure mechanical durability and safety.

• Marking Requirements

  • Each flask must be permanently labeled with:
    • Nominal volume (e.g., “100 ml”)
    • Maker’s or vendor’s identification
    • A writable area for additional marking
  • Reference to ISO 24450 is recommended for traceability.

• Related Normative References

  • ISO 3585: Borosilicate glass properties
  • ISO 1773: Narrow-necked boiling flasks
  • ISO 4797: Boiling flasks with conical ground joints

Applications

Wide-necked boiling flasks standardized by EN ISO 24450:2005 are essential in:

• Chemical Laboratories For mixing, heating, and boiling liquids in synthesis and analysis processes.

• Biotechnology and Pharmaceutical Labs Providing reliable containment during culture incubation, sterilization, and processing.

• Industrial Quality Control Enabling reproducible sample preparation and heating in R&D as well as production monitoring.

• Educational and Research Institutions Offering consistent, safe laboratory glassware suitable for teaching and experimental research.

The standard ensures that flasks interface properly with laboratory accessories such as heating mantles, clamps, and condensers, streamlining lab workflow and safety.

Related Standards

• ISO 1773 – Narrow-necked boiling flasks Applies when flask necks are narrow, complementing the wide-necked flask requirements of ISO 24450.

• ISO 4797 – Boiling flasks with conical ground joints Focuses on flasks designed to fit with ground glass joints used for secure connections with other glassware.

• ISO 3585 – Borosilicate glass 3.3 properties Defines the material quality, chemical durability, and thermal resistance for laboratory glassware including boiling flasks.

By adhering to EN ISO 24450:2005, laboratories worldwide ensure their wide-necked boiling flasks meet stringent safety, quality, and dimensional standards, which enhances reliability in laboratory procedures and promotes international harmonization in lab glassware manufacturing.