ASTM D 1155 : 2010 : R2020
Current
The latest, up-to-date edition.
Standard Test Method for Roundness of Glass Spheres
Hardcopy , PDF
English
01-06-2020
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
D 01
|
| DocumentType |
Test Method
|
| Pages |
5
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Current
|
| Supersedes |
1.1This test method2 covers the determination of the percent of true spheres in glass spheres used for retroreflective marking purposes and industrial uses.
1.2This test method includes two procedures as follows:
1.2.1Procedure A, in which the selected specimen is split into two size ranges or groups prior to separation into true spheres and irregular particles, and
1.2.2Procedure B, in which the selected specimen is split into five size ranges or groups prior to separation.
1.2.3In determining compliance with specification requirements, either Procedure A or Procedure B may be used. Where tests indicate failure to meet the specified percent of true spheres and irregular particles, the referee test shall be made in accordance with Procedure B.
1.3The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5This 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.
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