1878500

ASTM C148-14

Standard Test Methods for Polariscopic Examination of Glass Containers

standard by ASTM International , 05/01/2014

This document has been replaced. View the most recent version.

View all product details

Historical

Track It

Language:
    • Available Formats
    • Options
    • Availability
    • Priced From ( in USD )
    • Printed Edition
    • Ships in 1-2 business days
    • $52.00
    • Add to Cart
    • Printed Edition + PDF
    • Immediate download
    • $70.00
    • Add to Cart

Customers Who Bought This Also Bought

 

About This Item

 

Full Description

1.1 These test methods describe the determination of relative optical retardation associated with the state of anneal of glass containers. Two alternative test methods are covered as follows:

 

Sections

 

 

Test Method A-Comparison with Reference
 Standards Using a Polariscope

6 to 9

Test Method B-Determination with Polarimeter

10 to 12


1.2 Test Method A is useful in determining retardations less than 150 nm, while Test Method B is useful in determining retardations less than 565 nm.

Note 1-The apparent temper number as determined by these test methods depends primarily on (1) the magnitude and distribution of the residual stress in the glass, (2) the thickness of the glass (optical path length at the point of grading), and ( 3) the composition of the glass. For all usual soda-lime silica bottle glass compositions, the effect of the composition is negligible. In an examination of the bottom of a container, the thickness of glass may be taken into account by use of the following formula, which defines a real temper number, TR, in terms of the apparent temper number, TA, and the bottom thickness, t:

T R = TA (0.160/t)
where t is in inches, or
TR = TA (4.06/t)

where t is in millimetres.
This thickness should be measured at the location of the maximum apparent retardation. Interpretation of either real or apparent temper number requires practical experience with the particular ware being evaluated.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This 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 and health practices and determine the applicability of regulatory limitations prior to use.

 

Product Details

Published:
05/01/2014
Number of Pages:
4
File Size:
1 file , 72 KB
Redline File Size:
2 files , 140 KB
Note:
This product is unavailable in Russia, Ukraine, Belarus
 

Document History

  1. ASTM C148-17(2022)


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Most Recent

  2. ASTM C148-17


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Historical Version

  3. ASTM C148-14

    👀 currently
    viewing


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Historical Version

  4. ASTM C148-12


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Historical Version

  5. ASTM C148-00(2011)


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Historical Version

  6. ASTM C148-00(2006)


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Historical Version

  7. ASTM C148-00


    Standard Test Methods for Polariscopic Examination of Glass Containers

    • Historical Version