ASTM E1377-99(2022)
(Specification)Standard Specification for Laboratory Glass Kjeldahl Flasks
Standard Specification for Laboratory Glass Kjeldahl Flasks
ABSTRACT
This specification provides standard dimensional requirements for glass Kjeldahl flasks for nitrogen digestion analysis. The ungraduated flasks, Type I, and graduated flasks, Type II, shall conform to the specified capacities. Flasks shall be made of borosilicate glass, conforming to the required maximum residual stress, tolerance of volumetric accuracy, and dimensions.
SCOPE
1.1 This specification provides standard dimensional requirements for glass Kjeldahl flasks for nitrogen digestion analysis.
1.2 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
Relations
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: E1377 −99 (Reapproved 2022)
Standard Specification for
Laboratory Glass Kjeldahl Flasks
This standard is issued under the fixed designation E1377; 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 300 mL
500 mL
1.1 This specification provides standard dimensional re-
650 mL
quirements for glass Kjeldahl flasks for nitrogen digestion
800 mL
analysis.
3.1.1 Sizes 10 mLand 30 mLand the Soltys style 30 mLare
1.2 This international standard was developed in accor-
covered under Specification E147 and are not included herein.
dance with internationally recognized principles on standard-
3.2 Graduated Flasks, Type II, shall be of the following
ization established in the Decision on Principles for the
capacity:
Development of International Standards, Guides and Recom-
800 mL, graduated at 1000 mL
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
NOTE 1—The term millilitre (mL) is commonly used as a special name
for the cubic centimetre (cm ) and similarly the litre (L) for 1000 cubic
2. Referenced Documents
centimetres, in accordance with the International System of Units (SI).
2.1 ASTM Standards:
4. Material and Annealing
E147 Specification forApparatus for Microdetermination of
Nitrogen by Kjeldahl Method
4.1 Flasks shall be made of borosilicate glass conforming to
E438 Specification for Glasses in Laboratory Apparatus
the requirement of Type I, Class A of Specification E438.
E671 Specification for Maximum Permissible Thermal Re-
4.2 Maximum residual thermal stress shall conform to
sidual Stress in Annealed Glass Laboratory Apparatus
Specification E671.
E694 Specification for Laboratory Glass Volumetric Appa-
ratus
5. Appearance
E920 Specification for Commercially Packaged Laboratory
Apparatus
5.1 The general appearance of the flasks shall conform to
E921 Specification for Export Packaged Laboratory Appa-
Fig. 1.
ratus
E1133 Practice for Performance Testing of Packaged Labo-
6. Design
ratory Apparatus for United States Government Procure-
6.1 Necks on all flasks shall be circular in cross section, and
ments
shall be perpendicular to center of flask body.
E1157 Specification for Sampling and Testing of Reusable
Laboratory Glassware 6.2 Top finish of flask shall not be belled over 2 in. from the
top. Top shall be tooled or beaded.
3. Classification
6.3 Interior neck finish of sizes 500 and 800 mL may be
3.1 Ungraduated Flasks, Type I, shall be of the following
tooled to accept special rubber stopper especially made for
capacities:
Kjeldahl flasks.
100 mL
6.4 Bottom of flask shall be hemispherical in shape, while
top has a curved taper to point of junction with the flask neck.
This specification is under the jurisdiction of ASTM Committee E41 on
(See Fig. 1.)
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
Laboratory Ware and Supplies.
6.5 Wall thick
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