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This specification covers the glasses commonly used to manufacture laboratory glass apparatus. Three types of glasses are included: Type I, Class A which is a low-expansion borosilicate glass, Type I, Class B which is an alumino-borosilicate glass, and Type II which is a soda-lime glass. Different tests shall be conducted in order to determine the following properties of glasses: linear coefficient of expansion, annealing point, softening point, density, and chemical durability.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers the glasses commonly used to manufacture laboratory glass apparatus.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C225 Test Methods for Resistance of Glass Containers to Chemical Attack
C338 Test Method for Softening Point of Glass
C598 Test Method for Annealing Point and Strain Point of Glass by Beam Bending
C729 Test Method for Density of Glass by the Sink-Float Comparator
E228 Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
ICS Number Code 71.040.20 (Laboratory ware and related apparatus); 81.040.30 (Glass products)
UNSPSC Code 41121816(Laboratory glass tube)
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ASTM E438-92(2018), Standard Specification for Glasses in Laboratory Apparatus, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top