ASTM E1377-99(2005)
(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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1377 – 99 (Reapproved 2005)
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 100 mL
300 mL
1.1 This specification provides standard dimensional re-
500 mL
quirements for glass Kjeldahl flasks for nitrogen digestion
650 mL
analysis.
800 mL
2. Referenced Documents 3.1.1 Sizes 10 mLand 30 mLand the Soltys style 30 mLare
covered under Specification E147 and are not included herein.
2.1 ASTM Standards:
3.2 Graduated Flasks, Type II, shall be of the following
E147 SpecificationforApparatusforMicrodeterminationof
capacity:
Nitrogen by Kjeldahl Method
800 mL, graduated at 1000 mL
E438 Specification for Glasses in Laboratory Apparatus
E671 Specification for Maximum Permissible Thermal Re-
NOTE 1—The term millilitre (mL) is commonly used as a special name
sidual Stress in Annealed Glass Laboratory Apparatus
for the cubic centimetre (cm ) and similarly the litre (L) for 1000 cubic
E694 Specification for Laboratory Glass Volumetric Appa- centimetres, in accordance with the International System of Units (SI).
ratus
4. Material and Annealing
E920 Specification for Commercially Packaged Laboratory
4.1 Flasks shall be made of borosilicate glass conforming to
Apparatus
the requirement of Type I, Class A of Specification E438.
E921 Specification for Export Packaged Laboratory Appa-
4.2 Maximum residual thermal stress shall conform to
ratus
Specification E671.
E1133 Practice for Performance Testing of Packaged Labo-
ratory Apparatus for United States Government Procure-
5. Appearance
ments
5.1 The general appearance of the flasks shall conform to
E1157 Specification for Sampling and Testing of Reusable
Fig. 1.
Laboratory Glassware
6. Design
3. Classification
6.1 Necks on all flasks shall be circular in cross section, and
3.1 Ungraduated Flasks, Type I, shall be of the following
shall be perpendicular to center of flask body.
capacities:
6.2 Top finish of flask shall not be belled over 2 in. from the
top. Top shall be tooled or beaded.
This specification is under the jurisdiction of ASTM Committee E41 on
6.3 Interior neck finish of sizes 500 and 800 mL may be
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
tooled to accept special rubber stopper especially made for
Apparatus.
Kjeldahl flasks.
Current edition approved May 1, 2005. Published October 2005. Originally
6.4 Bottom of flask shall be hemispherical in shape, while
approved in 1990. Last previous edition approved in 1999 as E1377 – 99. DOI:
10.1520/E1377-99R05.
top has a curved taper to point of junction with the flask neck.
For referenced ASTM standards, visit the ASTM website, www.astm.org,
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