ASTM E237-02(2024)

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: E237 − 02 (Reapproved 2024)
Standard Specification for
Laboratory Glass Microvolumetric Vessels (Volumetric
Flasks and Centrifuge Tubes)
This standard is issued under the fixed designation E237; 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 E921 Specification for Export Packaged Laboratory Appa-
ratus
1.1 This specification covers volumetric flasks and four
E1133 Practice for Performance Testing of Packaged Labo-
types of centrifuge tubes, widely used in microchemistry.
ratory Apparatus for United States Government Procure-
NOTE 1—Specifications for several items listed below were developed
ments
by the Committee on Microchemical Apparatus, Division of Analytical
E1157 Specification for Sampling and Testing of Reusable
Chemistry, American Chemical Society.
Laboratory Glassware
1.2 Product with a stated capacity not listed in this standard
may be specified Class A tolerance when product conforms to
3. Volumetric Flasks
the tolerance range of the next smaller volumetric standard
3.1 The volumetric flasks shall be of either Style I or Style
product listed in Table 1.
II of Fig. 1 and shall conform to the requirements of Fig. 1 and
1.3 This international standard was developed in accor-
Table 1. Each flask shall be marked with the symbol “TC” (or
dance with internationally recognized principles on standard-
“IN”), the capacity, “20 °C”, and a 16 mm marking area. (All
ization established in the Decision on Principles for the
in an optional location on the flask.)
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Centrifuge Tubes
Barriers to Trade (TBT) Committee.
4.1 Centrifuge tubes of four types shall conform to the
requirements prescribed in Tables 2-4 and Figs. 2-5. The types
2. Referenced Documents
shown fit into the metal shields supplied with commercially
2.1 ASTM Standards:
available centrifuges. Removal of the glass stoppers from the
E438 Specification for Glasses in Laboratory Apparatus
centrifuge tubes shown in Fig. 3 and Fig. 4 is advisable before
E542 Practice for Gravimetric Calibration of Laboratory
centrifugation. The four types of centrifuge tubes specified are
Volumetric Instruments
as follows:
E671 Specification for Maximum Permissible Thermal Re-
4.1.1 Conical bottom, plain (Fig. 2).
sidual Stress in Annealed Glass Laboratory Apparatus
4.1.2 Conical bottom, stoppered (Fig. 3).
E694 Specification for Laboratory Glass Volumetric Appa-
4.1.3 Conical bottom, stoppered and graduated (Fig. 4).
ratus
4.1.4 Cylindrical bottom, plain (Fig. 5).
E920 Specification for Commercially Packaged Laboratory
Apparatus
5. Sampling and Testing
5.1 Refer to Specification E1157.
This specification is under the jurisdiction of ASTM Committee E41 on
6. Calibration
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
Laboratory Ware and Supplies.
6.1 Flasks and graduated tubes shall be calibrated in accor-
Current edition approved Feb. 1, 2024. Published February 2024. Originally
dance with Practice E542 and conform to applicable require-
approved in 1964. Last previous edition approved in 2019 as E237 – 02(2019). DOI:
ments of Specification E694. Glass shall be Type I, Class A of
10.1520/E0237-02R24.
Committee on Microchemical Apparatus, Division of Analytical Chemistry,
Specification E438 and annealing shall be in accordance with
American Chemical Society, “Report on Recommended Specifications for Micro-
Specification E671.
chemical Apparatus. Volumetric Glassware: Flasks, Pipets, and Centrifuge Tubes,”
Analytical Chemistry, Vol 28, 1956, p. 1993.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Packaging
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 Select from Specification E920, Specification E921, or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM we
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