Standard Practices for Verification and Calibration of Polarimeters

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-09-2020

Publisher

American Society for Testing and Materials

1.1Polarimeters and polariscopes used for measuring stress in glass are described in Test Methods F218, C148, and C978. These instruments include a light source and several optical elements (polarizers, optical retarders, filters, and so forth) that require occasional cleaning, realigning, and calibration. The objective of these practices is to describe the calibration and verification procedures required to maintain these instruments in calibration and ensure that the optical setup is within specification for satisfactory measurements.

1.2It is mandatory throughout these practices that both verification and calibration are carried out by qualified personnel who fully understand the concepts used in measurements of stress retardation and are experienced in the practices of measuring procedures described in Test Methods F218, C148, and C978.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4This 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.

Committee	C 14
DocumentType	Standard Practice
Pages	3
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM C 1426 : 2014

ASTM C 162 : 2005 : R2015	Standard Terminology of<brk type="line"/> Glass and Glass Products
ASTM C 162 : 2023	Standard Terminology of Glass and Glass Products
ASTM C 148 : 2017 : R2022	Standard Test Methods for Polariscopic Examination of Glass Containers
ASTM C 148 : 2017	Standard Test Methods for Polariscopic Examination of Glass Containers