ASTM E1403-97(2019)

Standard Specification for Laboratory Glass Boiling Flasks

ABSTRACT
This specification provides standard dimensional requirements for flat-bottom and round-bottom glass boiling flasks. Boiling flasks shall be in the following types: type I – flat bottomed: class 1 - tooled top, long neck; class 2 - ring neck, long neck; class 3 - ring neck, long neck, wicker protector; class 4 - standard taper neck, short neck; class 5 - standard taper neck, long neck. Type II – round bottomed: class 1—tooled top, long neck; class 2—ring neck, short neck; class 3—standard taper neck, short neck; class 4—standard taper neck, long neck; class 5—standard taper neck, short neck with side arm; class 6—standard taper neck, short neck with thermometer well; and class 7—ball and socket neck, short neck. Type III – heart-shape bottomed: class 1—standard taper neck, short neck. Necks on all single-neck flasks shall be circular in cross section and perpendicular to the center of the flask body. The top shall be strengthened and finished. Flat bottoms shall be in a plane perpendicular to the vertical axis through the neck of the flask. Round-bottomed flasks shall be spherical in shape to the point of juncture with the flask neck. The nominal capacity of a flask shall not exceed the actual capacity to the base of the neck.
SCOPE
1.1 This specification provides standard dimensional requirements for flat-bottom and round-bottom glass boiling flasks.  
Note 1: For packaging standards, choose among the following standards, E920, E921, E1133, and E1157.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Jun-2019
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaces: ASTM E1403-97(2013) - Standard Specification for Laboratory Glass Boiling Flasks
• Effective Date: 01-Jul-2019
• Refers: ASTM E438-92(2024) - Standard Specification for Glasses in Laboratory Apparatus
• Effective Date: 01-Feb-2024
• Refers: ASTM E920-97(2019) - Standard Specification for Commercially Packaged Laboratory Apparatus
• Effective Date: 01-Jul-2019
• Refers: ASTM E676-02(2019) - Standard Specification for Interchangeable Taper-Ground Joints
• Effective Date: 01-Jan-2019
• Refers: ASTM E438-92(2018) - Standard Specification for Glasses in Laboratory Apparatus
• Effective Date: 01-Jan-2018
• Refers: ASTM E677-94(2016) - Standard Specification for Interchangeable Spherical Ground Joints
• Effective Date: 01-Sep-2016
• Refers: ASTM E920-97(2013) - Standard Specification for Commercially Packaged Laboratory Apparatus
• Effective Date: 01-Nov-2013
• Refers: ASTM E676-02(2012) - Standard Specification for Interchangeable Taper-Ground Joints
• Effective Date: 01-Nov-2012
• Refers: ASTM E438-92(2011) - Standard Specification for Glasses in Laboratory Apparatus
• Effective Date: 01-Dec-2011
• Refers: ASTM E1157-87(2011) - Standard Specification for Sampling and Testing of Reusable Laboratory Glassware
• Effective Date: 01-Dec-2011
• Refers: ASTM E1157-87(2018)e1 - Standard Specification for Sampling and Testing of Reusable Laboratory Glassware
• Effective Date: 01-Dec-2011
• Refers: ASTM E1133-86(2010) - Standard Practice for Performance Testing of Packaged Laboratory Apparatus for United States Government Procurements
• Effective Date: 01-Sep-2010
• Refers: ASTM E921-97(2010) - Standard Specification for Export Packaged Laboratory Apparatus
• Effective Date: 15-May-2010
• Refers: ASTM E671-98(2010) - Standard Specification for Maximum Permissible Thermal Residual Stress in Annealed Glass Laboratory Apparatus
• Effective Date: 01-Apr-2010
• Refers: ASTM E677-94(2010) - Standard Specification for Interchangeable Spherical Ground Joints
• Effective Date: 01-Apr-2010

Overview

ASTM E1403-97(2019): Standard Specification for Laboratory Glass Boiling Flasks establishes the dimensional, material, and performance requirements for laboratory glass boiling flasks. Issued by ASTM International, this specification ensures uniformity and reliability in boiling flask design for scientific, educational, and industrial laboratories. The standard covers flat-bottom, round-bottom, and heart-shaped bottom glass boiling flasks, outlining various types and classes to meet diverse laboratory needs.

Complying with ASTM E1403 is essential for laboratories, manufacturers, and suppliers to guarantee product quality, compatibility, and safety in laboratory glassware. This standard follows internationally recognized principles and supports global trade and laboratory best practices.

Key Topics

• Types and Classes:
  • Flat-bottomed (Type I): Includes classes such as tooled top, ring neck, and standard taper neck in varying sizes and neck designs.
  • Round-bottomed (Type II): Features options like tooled tops, standard taper necks, side arms, thermometer wells, and ball/socket joints.
  • Heart-shaped bottomed (Type III): Provides concentrated liquid handling for specific laboratory needs.
• Material Requirements:
  • Flasks must be made from borosilicate glass as per ASTM E438 for chemical resistance and durability.
  • Maximum permissible thermal residual stress is established by ASTM E671 to ensure glass strength.
• Dimensional Specifications:
  • Detailed size, neck length, wall thickness, and overall height requirements for each type are given to standardize flask manufacturing.
  • Standards specify that the neck is circular and perpendicular to the flask body, with bottoms conforming to strict dimensional criteria to ensure safe handling and use.
• Marking and Packaging:
  • Each flask is permanently marked with the manufacturer’s name, nominal capacity, and joint size where applicable.
  • Space is provided on the flask for user marking.
  • Packaging must comply with ASTM E920, E921, or E1133 for safe transport and storage.

Applications

ASTM E1403-97(2019) boiling flasks are vital in a variety of laboratory settings, including:

• Chemical Synthesis and Reactions:
  Ensures uniform heating and mixing in both research and quality control laboratories.
• Sample Preparation:
  Used for boiling, evaporation, and concentration of samples across scientific, medical, environmental, and industrial disciplines.
• Educational Laboratories:
  Standardized glassware supports consistent teaching practices in academic settings.
• Industrial and Pharmaceutical Labs:
  Critical for consistent process control and compliance with safety and quality requirements.

The clear material and construction specifications outlined in ASTM E1403 support repeatability, safety, and interchangeability of laboratory glassware worldwide.

Related Standards

ASTM E1403 references several related ASTM standards for laboratory glassware, including:

• ASTM E438: Specification for glasses in laboratory apparatus
• ASTM E671: Permissible thermal stress in annealed glass laboratory apparatus
• ASTM E676: Specification for interchangeable taper-ground joints
• ASTM E677: Specification for interchangeable spherical ground joints
• ASTM E920/E921: Packaging standards for domestically and export packaged laboratory apparatus
• ASTM E1133: Performance testing of packaged laboratory apparatus
• ASTM E1157: Sampling and testing of reusable laboratory glassware

Keywords: ASTM E1403, laboratory glass boiling flasks, borosilicate glass, round-bottom flask, flat-bottom flask, glassware specification, scientific glassware, ASTM standards, laboratory safety, chemistry equipment, boiling flask types.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E1403 −97 (Reapproved 2019)
Standard Specification for
Laboratory Glass Boiling Flasks
This standard is issued under the fixed designation E1403; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Classification
1.1 This specification provides standard dimensional re-
3.1 Boiling flasks shall be in the following types and sizes.
quirements for flat-bottom and round-bottom glass boiling
3.1.1 Type I—Flat bottomed
flasks.
3.1.1.1 Class 1—Tooled top; long neck in the following
NOTE 1—For packaging standards, choose among the following sizes: 50 mL, 125 mL, 250 mL, 500 mL, 1000 mL, 2000 mL,
standards, E920, E921, E1133, and E1157.
3000 mL, 6000 mL, and 12000 mL.
1.2 The values stated in SI units are to be regarded as
3.1.1.2 Class 2—Ring neck, long neck in the following
standard. No other units of measurement are included in this
sizes: 500 mL, 1000 mL, 2000 mL, 6000 mL, and 12000 mL.
standard.
3.1.1.3 Class 3—Ring neck, long neck, wicker protector in
1.3 This international standard was developed in accor- the following size: 500 mL and 1000 mL.
¯
dance with internationally recognized principles on standard-
3.1.1.4 Class 4—Standard Taper $ neck, short neck in the
ization established in the Decision on Principles for the
following sizes: 50 mL, 125 mL, 250 mL, 300 mL, 500 mL,
Development of International Standards, Guides and Recom-
and 1000 mL.
mendations issued by the World Trade Organization Technical
¯
3.1.1.5 Class 5—Standard Taper $ neck, long neck in the
Barriers to Trade (TBT) Committee.
following sizes: 250 mL, 500 mL, and 1000 mL.
3.1.2 Type II—Round Bottomed
2. Referenced Documents
3.1.2.1 Class 1—Tooled top, long neck in the following
2.1 ASTM Standards:
sizes: 25 mL, 50 mL, 100 mL, 250 mL, 500 mL, 1000 mL,
E438 Specification for Glasses in Laboratory Apparatus
2000 mL, 5000 mL, and 6000 mL.
E671 Specification for Maximum Permissible Thermal Re-
3.1.2.2 Class 2—Ring neck, short neck in the following
sidual Stress in Annealed Glass Laboratory Apparatus
sizes: 250 mL, 500 mL, 1000 mL, 2000 mL, 3000 mL,
E676 Specification for Interchangeable Taper-Ground Joints
5000 mL, 12000 mL, and 22000 mL.
E677 Specification for Interchangeable Spherical Ground
¯
3.1.2.3 Class 3—Standard Taper $ neck, short neck in the
Joints
following sizes: 5 mL, 10 mL, 25 mL, 50 mL, 100 mL,
E920 Specification for Commercially Packaged Laboratory
250 mL, 500 mL, 1000 mL, 2000 mL, 3000 mL, 5000 mL, and
Apparatus
12000 mL.
E921 Specification for Export Packaged Laboratory Appa-
¯
3.1.2.4 Class 4—Standard Taper $ neck, long neck in the
ratus
following sizes: 100 mL, 250 mL, 500 mL, and 1000 mL.
E1133 Practice for Performance Testing of Packaged Labo-
¯
ratory Apparatus for United States Government Procure-
3.1.2.5 Class 5—Standard Taper $ neck, short neck with
ments
side arm in the following sizes: 250 mL and 300 mL.
E1157 Specification for Sampling and Testing of Reusable ¯
3.1.2.6 Class 6—Standard Taper $ neck, short neck with
Laboratory Glassware
thermometer well in the following sizes: 500 mL, 1000 mL,
and 2000 mL.
¯
3.1.2.7 Class 7—Ball and socket $ neck, short neck in the
This specification is under the jurisdiction of ASTM Committee E41 on
following sizes 250 mL, 500 mL, 1000 mL, and 2000 mL.
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
Laboratory Ware and Supplies.
3.1.3 Type III—Heart-shape bottomed
Current edition approved July 1, 2019. Published August 2019. Originally
¯
3.1.3.1 Class 1—Standard Taper $ neck, short neck in the
approved in 1991. Last previous edition approved in 2013 as E1403 – 97(2013).
following sizes: 5 mL, 10 mL, 25 mL, 50 mL, and 100 mL.
DOI: 10.1520/E1403-97R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 2—The term millilitre (mL) is commonly used as a special name
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on for the cubic centimetre (cm ) and similarly the litre (L) for 1000 cubic
the ASTM website. centimetres, in accordance with the International System of Units (SI).
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E1403 − 97 (2019)
TABLE 1 Capacity and Dimensions for Glass
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