ASTM E288-94(1998)
(Specification)Standard Specification for Laboratory Glass Volumetric Flasks
Standard Specification for Laboratory Glass Volumetric Flasks
SCOPE
1.1 This specification covers requirements for glass volumetric flasks of precision and general-purpose grades suitable for laboratory purposes.
1.1.1 Class A -Each flask of precision grade shall be marked with the letter "A" to signify compliance with applicable construction and accuracy requirements. Flasks may be marked with an identification number (serial number) at the option of the manufacturer.
1.1.2 Class B -General purpose flasks are of the same basic design as Class A flasks. However, volumetric tolerances for Class B flasks shall be within twice the specified range allowed for Class A flasks. These flasks need not be marked with their class designation. Note 1-Specifications for microvolumetric flasks in sizes from 1 mL to 25 mL, inclusive, are given in Specification E237. Note 2-The Twelfth General (International) Conference on Weights and Measures redefined the litre as a "special name for the cubic decimetre," but agreed to permit continuance of the terms litre, millilitre, and mL, except in association with measurements of the highest precision. For volumetric glassware the difference between the old and new meanings of litre is negligible. Therefore, either mL or cm may be marked on ware covered by this Specification.
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Designation: E 288 – 94 (Reapproved 1998)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Laboratory Glass Volumetric Flasks
This standard is issued under the fixed designation E 288; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 1157 Specification for the Sampling and Testing of Reus-
able Laboratory Glassware
1.1 This specification covers requirements for glass volu-
metric flasks of precision and general-purpose grades suitable
3. General Requirements
for laboratory purposes.
3.1 Calibration—Flasks shall be calibrated in accordance
1.1.1 Class A—Each flask of precision grade shall be
with the methods outlined in Practice E 542.
marked with the letter “A” to signify compliance with appli-
cable construction and accuracy requirements. Flasks may be
4. Design
marked with an identification number (serial number) at the
4.1 Flasks shall be designed in accordance with Specifica-
option of the manufacturer.
tion E 694. Flask necks may be designed with either taper-
1.1.2 Class B—General purpose flasks are of the same basic
ground joints to accept stopper sizes specified in Table 1 or
design as Class A flasks. However, volumetric tolerances for
they may have reinforced rims or screw threads for acceptance
Class B flasks shall be within twice the specified range allowed
of cap style closures. The neck may be either straightsided or
for Class A flasks. These flasks need not be marked with their
provided with a mixing bulb located above the graduation line
class designation.
(intermediate bulb style). Any cross section of the neck taken
NOTE 1—Specifications for microvolumetric flasks in sizes from 1 mL
in a plane parallel to the base shall be circular; similar sections
to 25 mL, inclusive, are given in Specification E 237.
of the body shall be either circular or square. The shape shall
NOTE 2—The Twelfth General (International) Conference on Weights
permit complete emptying and thorough cleaning. The bottom
and Measures redefined the litre as a “special name for the cubic
or base shall be such that the volumetric flask will stand solidly
decimetre,” but agreed to permit continuance of the terms litre, millilitre,
on a level surface. The area of the bottom or base shall be of
and mL, except in association with measurements of the highest precision.
For volumetric glassware the difference between the old and new sufficient size so that the volumetric flask (except the 10-mL
meanings of litre is negligible. Therefore, either mL or cm may be
flask), when empty and without stopper, shall stand on an
marked on ware covered by this Specification.
inclined plane of 15° to the horizontal. The 10-mL flask shall
stand on an inclined plane of 10° to the horizontal.
2. Referenced Documents
4.2 Intermediate Bulb Style Flasks—The bulb in the neck of
2.1 ASTM Standards:
an Intermediate Bulb-style flask shall hold approximately 10 %
E 237 Specification for Microvolumetric Vessels (Volumet-
of the nominal capacity for sizes up to 1000 mL, inclusive, and
ric Flasks and Centrifuge Tubes)
5 % of the nominal capacity for the 2000-mL size.
E 438 Specification for Glasses in Laboratory Apparatus
4.3 Stoppers—Where stoppers are provided they may be
E 542 Practice for Calibration of Volumetric Ware
either glass or plastic, as desired by the user. Stoppers shall
E 675 Specification for Interchangeable Taper-Ground
prevent leakage of liquid when flask is inverted or shaken.
Stopcocks and Stoppers
4.4 Dimensions—Flasks shall conform to the essential di-
E 694 Specification for Volumetric Ware
mensions given in Table 1.
E 920 Specification for Commercially Packaged Laboratory
4.5 Markings—All markings shall be permanent
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