ASTM E288

1.1 This specification covers requirements for glass volumetric flasks of precision and general-purpose grades suitable for laboratory purposes.

1.1.1 Class AEach 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 BGeneral 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.

Specifications for micro volumetric flasks in sizes from 1 mL to 25 mL, inclusive, are given in Specification E 237.

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 cm³ may be marked on ware covered by this Specification.

1.1.3 Product with a stated capacity not listed in this standard may be specified class A tolerance when product conforms to the tolerance reange of the next smaller volumetric standard product listed in .

1.1.4 Wide MouthRequirements for insertion of tablet or capsule for assay dilution and to accommodate access of larger diameter pipets have created demand for introduction of volumetric flasks provided with larger opening. Product with a stated capacity with a wider mouth, not previously listed in this standard, may be specified class A tolerance when product conforms to the tolerance range of the volumetric standard product listed in . In order to avoid confusion, wide neck flask tolerance must be marked on each flask as a requirement.

2. Referenced Documents

E1133 Practice for Performance Testing of Packaged Laboratory Apparatus for United States Government Procurements
E1157 Specification for Sampling and Testing of Reusable Laboratory Glassware
E237 Specification for Laboratory Glass Microvolumetric Vessels (Volumetric Flasks and Centrifuge Tubes)
E438 Specification for Glasses in Laboratory Apparatus
E542 Practice for Calibration of Laboratory Volumetric Apparatus
E675 Specification for Interchangeable Taper-Ground Stopcocks And Stoppers
E694 Specification for Laboratory Glass Volumetric Apparatus
E920 Specification for Commercially Packaged Laboratory Apparatus
E921 Specification for Export Packaged Laboratory Apparatus

Index Terms

flasks; glass; volumetric; ICS Number Code 71.040.20

Citing ASTM Standards

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